diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 8bd74db8d..9dfa05bc2 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -151,7 +151,7 @@ static int ssl_get_remaining_payload_in_datagram( mbedtls_ssl_context const *ssl
 {
     int ret;
     size_t remaining, expansion;
-    size_t max_len = MBEDTLS_SSL_MAX_CONTENT_LEN;
+    size_t max_len = MBEDTLS_SSL_OUT_CONTENT_LEN;
 
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
     const size_t mfl = mbedtls_ssl_get_max_frag_len( ssl );
@@ -212,7 +212,10 @@ static int ssl_double_retransmit_timeout( mbedtls_ssl_context *ssl )
      * delivered) of any compliant IPv4 (and IPv6) network, and should work
      * on most non-IP stacks too. */
     if( ssl->handshake->retransmit_timeout != ssl->conf->hs_timeout_min )
+    {
         ssl->handshake->mtu = 508;
+        MBEDTLS_SSL_DEBUG_MSG( 2, ( "mtu autoreduction to %d bytes", ssl->handshake->mtu ) );
+    }
 
     new_timeout = 2 * ssl->handshake->retransmit_timeout;
 
@@ -7905,6 +7908,12 @@ size_t mbedtls_ssl_get_max_frag_len( const mbedtls_ssl_context *ssl )
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
 static size_t ssl_get_current_mtu( const mbedtls_ssl_context *ssl )
 {
+    /* Return unlimited mtu for client hello messages to avoid fragmentation. */
+    if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT &&
+        ( ssl->state == MBEDTLS_SSL_CLIENT_HELLO ||
+          ssl->state == MBEDTLS_SSL_SERVER_HELLO ) )
+        return ( 0 );
+
     if( ssl->handshake == NULL || ssl->handshake->mtu == 0 )
         return( ssl->mtu );
 
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index a1f0e5ba3..e6791901f 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -262,6 +262,21 @@ requires_ipv6() {
     fi
 }
 
+# skip next test if it's i686 or uname is not available
+requires_not_i686() {
+    if [ -z "${IS_I686:-}" ]; then
+        IS_I686="YES"
+        if which "uname" >/dev/null 2>&1; then
+            if [ -z "$(uname -a | grep i686)" ]; then
+                IS_I686="NO"
+            fi
+        fi
+    fi
+    if [ "$IS_I686" = "YES" ]; then
+        SKIP_NEXT="YES"
+    fi
+}
+
 # Calculate the input & output maximum content lengths set in the config
 MAX_CONTENT_LEN=$( ../scripts/config.pl get MBEDTLS_SSL_MAX_CONTENT_LEN || echo "16384")
 MAX_IN_LEN=$( ../scripts/config.pl get MBEDTLS_SSL_IN_CONTENT_LEN || echo "$MAX_CONTENT_LEN")
@@ -5731,10 +5746,12 @@ run_test    "DTLS fragmenting: none (for reference)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
              max_frag_len=4096" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
+             hs_timeout=2500-60000 \
              max_frag_len=4096" \
             0 \
             -S "found fragmented DTLS handshake message" \
@@ -5749,10 +5766,12 @@ run_test    "DTLS fragmenting: server only (max_frag_len)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
              max_frag_len=1024" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
+             hs_timeout=2500-60000 \
              max_frag_len=2048" \
             0 \
             -S "found fragmented DTLS handshake message" \
@@ -5771,10 +5790,12 @@ run_test    "DTLS fragmenting: server only (more) (max_frag_len)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
              max_frag_len=512" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
+             hs_timeout=2500-60000 \
              max_frag_len=4096" \
             0 \
             -S "found fragmented DTLS handshake message" \
@@ -5789,12 +5810,14 @@ run_test    "DTLS fragmenting: client-initiated, server only (max_frag_len)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=none \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
              max_frag_len=2048" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
-             max_frag_len=512" \
-            0 \
+             hs_timeout=2500-60000 \
+             max_frag_len=1024" \
+             0 \
             -S "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
@@ -5811,15 +5834,17 @@ requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
 run_test    "DTLS fragmenting: client-initiated, server only (max_frag_len), proxy MTU" \
-            -p "$P_PXY mtu=560" \
+            -p "$P_PXY mtu=1110" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=none \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
              max_frag_len=2048" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
-             max_frag_len=512" \
+             hs_timeout=2500-60000 \
+             max_frag_len=1024" \
             0 \
             -S "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
@@ -5833,11 +5858,13 @@ run_test    "DTLS fragmenting: client-initiated, both (max_frag_len)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
              max_frag_len=2048" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
-             max_frag_len=512" \
+             hs_timeout=2500-60000 \
+             max_frag_len=1024" \
             0 \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
@@ -5855,15 +5882,17 @@ requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
 run_test    "DTLS fragmenting: client-initiated, both (max_frag_len), proxy MTU" \
-            -p "$P_PXY mtu=560" \
+            -p "$P_PXY mtu=1110" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
              max_frag_len=2048" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
-             max_frag_len=512" \
+             hs_timeout=2500-60000 \
+             max_frag_len=1024" \
             0 \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
@@ -5876,10 +5905,12 @@ run_test    "DTLS fragmenting: none (for reference) (MTU)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
              mtu=4096" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
+             hs_timeout=2500-60000 \
              mtu=4096" \
             0 \
             -S "found fragmented DTLS handshake message" \
@@ -5893,11 +5924,13 @@ run_test    "DTLS fragmenting: client (MTU)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=3500-60000 \
              mtu=4096" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
-             mtu=512" \
+             hs_timeout=3500-60000 \
+             mtu=1024" \
             0 \
             -s "found fragmented DTLS handshake message" \
             -C "found fragmented DTLS handshake message" \
@@ -5910,10 +5943,12 @@ run_test    "DTLS fragmenting: server (MTU)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
              mtu=512" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
+             hs_timeout=2500-60000 \
              mtu=2048" \
             0 \
             -S "found fragmented DTLS handshake message" \
@@ -5923,54 +5958,96 @@ run_test    "DTLS fragmenting: server (MTU)" \
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
-run_test    "DTLS fragmenting: both (MTU)" \
+run_test    "DTLS fragmenting: both (MTU=1024)" \
+            -p "$P_PXY mtu=1024" \
+            "$P_SRV dtls=1 debug_level=2 auth_mode=required \
+             crt_file=data_files/server7_int-ca.crt \
+             key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
+             mtu=1024" \
+            "$P_CLI dtls=1 debug_level=2 \
+             crt_file=data_files/server8_int-ca2.crt \
+             key_file=data_files/server8.key \
+             hs_timeout=2500-60000 \
+             mtu=1024" \
+            0 \
+            -s "found fragmented DTLS handshake message" \
+            -c "found fragmented DTLS handshake message" \
+            -C "error"
+
+# Forcing ciphersuite for this test to fit the MTU of 512 with full config.
+requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
+requires_config_enabled MBEDTLS_RSA_C
+requires_config_enabled MBEDTLS_ECDSA_C
+requires_config_enabled MBEDTLS_SHA256_C
+requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
+requires_config_enabled MBEDTLS_AES_C
+requires_config_enabled MBEDTLS_GCM_C
+run_test    "DTLS fragmenting: both (MTU=512)" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=2500-60000 \
              mtu=512" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
+             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
+             hs_timeout=2500-60000 \
              mtu=512" \
             0 \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
-# Test for automatic MTU reduction on repeated resend
+# Test for automatic MTU reduction on repeated resend.
+# Forcing ciphersuite for this test to fit the MTU of 508 with full config.
+# The ratio of max/min timeout should ideally equal 4 to accept two
+# retransmissions, but in some cases (like both the server and client using
+# fragmentation and auto-reduction) an extra retransmission might occur,
+# hence the ratio of 8.
 not_with_valgrind
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
+requires_config_enabled MBEDTLS_AES_C
+requires_config_enabled MBEDTLS_GCM_C
 run_test    "DTLS fragmenting: proxy MTU: auto-reduction" \
             -p "$P_PXY mtu=508" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
-             key_file=data_files/server7.key\
-             hs_timeout=100-400" \
+             key_file=data_files/server7.key \
+             hs_timeout=400-3200" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
-             hs_timeout=100-400" \
+             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
+             hs_timeout=400-3200" \
             0 \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
+# Forcing ciphersuite for this test to fit the MTU of 508 with full config.
 only_with_valgrind
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
+requires_config_enabled MBEDTLS_AES_C
+requires_config_enabled MBEDTLS_GCM_C
 run_test    "DTLS fragmenting: proxy MTU: auto-reduction" \
             -p "$P_PXY mtu=508" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
-             key_file=data_files/server7.key\
+             key_file=data_files/server7.key \
              hs_timeout=250-10000" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
+             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
              hs_timeout=250-10000" \
             0 \
             -s "found fragmented DTLS handshake message" \
@@ -5980,78 +6057,146 @@ run_test    "DTLS fragmenting: proxy MTU: auto-reduction" \
 # the proxy shouldn't drop or mess up anything, so we shouldn't need to resend
 # OTOH the client might resend if the server is to slow to reset after sending
 # a HelloVerifyRequest, so only check for no retransmission server-side
-not_with_valgrind # spurious resend due to timeout
+not_with_valgrind # spurious autoreduction due to timeout
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
-run_test    "DTLS fragmenting: proxy MTU, simple handshake" \
-            -p "$P_PXY mtu=512" \
+run_test    "DTLS fragmenting: proxy MTU, simple handshake (MTU=1024)" \
+            -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
-             mtu=512" \
+             hs_timeout=10000-60000 \
+             mtu=1024" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
-             mtu=512" \
+             hs_timeout=10000-60000 \
+             mtu=1024" \
             0 \
-            -S "resend" \
+            -S "autoreduction" \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
-not_with_valgrind # spurious resend due to timeout
+# Forcing ciphersuite for this test to fit the MTU of 512 with full config.
+# the proxy shouldn't drop or mess up anything, so we shouldn't need to resend
+# OTOH the client might resend if the server is to slow to reset after sending
+# a HelloVerifyRequest, so only check for no retransmission server-side
+not_with_valgrind # spurious autoreduction due to timeout
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
-run_test    "DTLS fragmenting: proxy MTU, simple handshake, nbio" \
+requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
+requires_config_enabled MBEDTLS_AES_C
+requires_config_enabled MBEDTLS_GCM_C
+run_test    "DTLS fragmenting: proxy MTU, simple handshake (MTU=512)" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
-             mtu=512 nbio=2" \
+             hs_timeout=10000-60000 \
+             mtu=512" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
-             mtu=512 nbio=2" \
+             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
+             hs_timeout=10000-60000 \
+             mtu=512" \
             0 \
-            -S "resend" \
+            -S "autoreduction" \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
+not_with_valgrind # spurious autoreduction due to timeout
+requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
+requires_config_enabled MBEDTLS_RSA_C
+requires_config_enabled MBEDTLS_ECDSA_C
+run_test    "DTLS fragmenting: proxy MTU, simple handshake, nbio (MTU=1024)" \
+            -p "$P_PXY mtu=1024" \
+            "$P_SRV dtls=1 debug_level=2 auth_mode=required \
+             crt_file=data_files/server7_int-ca.crt \
+             key_file=data_files/server7.key \
+             hs_timeout=10000-60000 \
+             mtu=1024 nbio=2" \
+            "$P_CLI dtls=1 debug_level=2 \
+             crt_file=data_files/server8_int-ca2.crt \
+             key_file=data_files/server8.key \
+             hs_timeout=10000-60000 \
+             mtu=1024 nbio=2" \
+            0 \
+            -S "autoreduction" \
+            -s "found fragmented DTLS handshake message" \
+            -c "found fragmented DTLS handshake message" \
+            -C "error"
+
+# Forcing ciphersuite for this test to fit the MTU of 512 with full config.
+not_with_valgrind # spurious autoreduction due to timeout
+requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
+requires_config_enabled MBEDTLS_RSA_C
+requires_config_enabled MBEDTLS_ECDSA_C
+requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
+requires_config_enabled MBEDTLS_AES_C
+requires_config_enabled MBEDTLS_GCM_C
+run_test    "DTLS fragmenting: proxy MTU, simple handshake, nbio (MTU=512)" \
+            -p "$P_PXY mtu=512" \
+            "$P_SRV dtls=1 debug_level=2 auth_mode=required \
+             crt_file=data_files/server7_int-ca.crt \
+             key_file=data_files/server7.key \
+             hs_timeout=10000-60000 \
+             mtu=512 nbio=2" \
+            "$P_CLI dtls=1 debug_level=2 \
+             crt_file=data_files/server8_int-ca2.crt \
+             key_file=data_files/server8.key \
+             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
+             hs_timeout=10000-60000 \
+             mtu=512 nbio=2" \
+            0 \
+            -S "autoreduction" \
+            -s "found fragmented DTLS handshake message" \
+            -c "found fragmented DTLS handshake message" \
+            -C "error"
+
+# Forcing ciphersuite for this test to fit the MTU of 1450 with full config.
 # This ensures things still work after session_reset().
 # It also exercises the "resumed handshake" flow.
 # Since we don't support reading fragmented ClientHello yet,
 # up the MTU to 1450 (larger than ClientHello with session ticket,
 # but still smaller than client's Certificate to ensure fragmentation).
-# A resend on the client-side might happen if the server is
-# slow to reset, therefore omitting '-C "resend"' below.
+# An autoreduction on the client-side might happen if the server is
+# slow to reset, therefore omitting '-C "autoreduction"' below.
 # reco_delay avoids races where the client reconnects before the server has
-# resumed listening, which would result in a spurious resend.
-not_with_valgrind # spurious resend due to timeout
+# resumed listening, which would result in a spurious autoreduction.
+not_with_valgrind # spurious autoreduction due to timeout
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
+requires_config_enabled MBEDTLS_AES_C
+requires_config_enabled MBEDTLS_GCM_C
 run_test    "DTLS fragmenting: proxy MTU, resumed handshake" \
             -p "$P_PXY mtu=1450" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
+             hs_timeout=10000-60000 \
              mtu=1450" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
+             hs_timeout=10000-60000 \
+             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
              mtu=1450 reconnect=1 reco_delay=1" \
             0 \
-            -S "resend" \
+            -S "autoreduction" \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
-# A resend on the client-side might happen if the server is
-# slow to reset, therefore omitting '-C "resend"' below.
-not_with_valgrind # spurious resend due to timeout
+# An autoreduction on the client-side might happen if the server is
+# slow to reset, therefore omitting '-C "autoreduction"' below.
+not_with_valgrind # spurious autoreduction due to timeout
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
@@ -6065,22 +6210,24 @@ run_test    "DTLS fragmenting: proxy MTU, ChachaPoly renego" \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
              exchanges=2 renegotiation=1 \
-             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-CHACHA20-POLY1305-SHA256 \
+             hs_timeout=10000-60000 \
              mtu=512" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
              exchanges=2 renegotiation=1 renegotiate=1 \
+             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
+             hs_timeout=10000-60000 \
              mtu=512" \
             0 \
-            -S "resend" \
+            -S "autoreduction" \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
-# A resend on the client-side might happen if the server is
-# slow to reset, therefore omitting '-C "resend"' below.
-not_with_valgrind # spurious resend due to timeout
+# An autoreduction on the client-side might happen if the server is
+# slow to reset, therefore omitting '-C "autoreduction"' below.
+not_with_valgrind # spurious autoreduction due to timeout
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
@@ -6095,22 +6242,24 @@ run_test    "DTLS fragmenting: proxy MTU, AES-GCM renego" \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
              exchanges=2 renegotiation=1 \
-             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
+             hs_timeout=10000-60000 \
              mtu=512" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
              exchanges=2 renegotiation=1 renegotiate=1 \
+             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
+             hs_timeout=10000-60000 \
              mtu=512" \
             0 \
-            -S "resend" \
+            -S "autoreduction" \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
-# A resend on the client-side might happen if the server is
-# slow to reset, therefore omitting '-C "resend"' below.
-not_with_valgrind # spurious resend due to timeout
+# An autoreduction on the client-side might happen if the server is
+# slow to reset, therefore omitting '-C "autoreduction"' below.
+not_with_valgrind # spurious autoreduction due to timeout
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
@@ -6120,27 +6269,29 @@ requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_CCM_C
 run_test    "DTLS fragmenting: proxy MTU, AES-CCM renego" \
-            -p "$P_PXY mtu=512" \
+            -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
              exchanges=2 renegotiation=1 \
              force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-CCM-8 \
-             mtu=512" \
+             hs_timeout=10000-60000 \
+             mtu=1024" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
              exchanges=2 renegotiation=1 renegotiate=1 \
-             mtu=512" \
+             hs_timeout=10000-60000 \
+             mtu=1024" \
             0 \
-            -S "resend" \
+            -S "autoreduction" \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
-# A resend on the client-side might happen if the server is
-# slow to reset, therefore omitting '-C "resend"' below.
-not_with_valgrind # spurious resend due to timeout
+# An autoreduction on the client-side might happen if the server is
+# slow to reset, therefore omitting '-C "autoreduction"' below.
+not_with_valgrind # spurious autoreduction due to timeout
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
@@ -6151,27 +6302,29 @@ requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_CIPHER_MODE_CBC
 requires_config_enabled MBEDTLS_SSL_ENCRYPT_THEN_MAC
 run_test    "DTLS fragmenting: proxy MTU, AES-CBC EtM renego" \
-            -p "$P_PXY mtu=512" \
+            -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
              exchanges=2 renegotiation=1 \
              force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-CBC-SHA256 \
-             mtu=512" \
+             hs_timeout=10000-60000 \
+             mtu=1024" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
              exchanges=2 renegotiation=1 renegotiate=1 \
-             mtu=512" \
+             hs_timeout=10000-60000 \
+             mtu=1024" \
             0 \
-            -S "resend" \
+            -S "autoreduction" \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
-# A resend on the client-side might happen if the server is
-# slow to reset, therefore omitting '-C "resend"' below.
-not_with_valgrind # spurious resend due to timeout
+# An autoreduction on the client-side might happen if the server is
+# slow to reset, therefore omitting '-C "autoreduction"' below.
+not_with_valgrind # spurious autoreduction due to timeout
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
@@ -6181,27 +6334,33 @@ requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_CIPHER_MODE_CBC
 run_test    "DTLS fragmenting: proxy MTU, AES-CBC non-EtM renego" \
-            -p "$P_PXY mtu=512" \
+            -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
              key_file=data_files/server7.key \
              exchanges=2 renegotiation=1 \
              force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-CBC-SHA256 etm=0 \
-             mtu=512" \
+             hs_timeout=10000-60000 \
+             mtu=1024" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
              exchanges=2 renegotiation=1 renegotiate=1 \
-             mtu=512" \
+             hs_timeout=10000-60000 \
+             mtu=1024" \
             0 \
-            -S "resend" \
+            -S "autoreduction" \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
+# Forcing ciphersuite for this test to fit the MTU of 512 with full config.
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
+requires_config_enabled MBEDTLS_AES_C
+requires_config_enabled MBEDTLS_GCM_C
 client_needs_more_time 2
 run_test    "DTLS fragmenting: proxy MTU + 3d" \
             -p "$P_PXY mtu=512 drop=8 delay=8 duplicate=8" \
@@ -6212,15 +6371,20 @@ run_test    "DTLS fragmenting: proxy MTU + 3d" \
             "$P_CLI dgram_packing=0 dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
+             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
              hs_timeout=250-10000 mtu=512" \
             0 \
             -s "found fragmented DTLS handshake message" \
             -c "found fragmented DTLS handshake message" \
             -C "error"
 
+# Forcing ciphersuite for this test to fit the MTU of 512 with full config.
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
+requires_config_enabled MBEDTLS_AES_C
+requires_config_enabled MBEDTLS_GCM_C
 client_needs_more_time 2
 run_test    "DTLS fragmenting: proxy MTU + 3d, nbio" \
             -p "$P_PXY mtu=512 drop=8 delay=8 duplicate=8" \
@@ -6231,6 +6395,7 @@ run_test    "DTLS fragmenting: proxy MTU + 3d, nbio" \
             "$P_CLI dtls=1 debug_level=2 \
              crt_file=data_files/server8_int-ca2.crt \
              key_file=data_files/server8.key \
+             force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
              hs_timeout=250-10000 mtu=512 nbio=2" \
             0 \
             -s "found fragmented DTLS handshake message" \
@@ -6241,7 +6406,6 @@ run_test    "DTLS fragmenting: proxy MTU + 3d, nbio" \
 #
 # here and below we just want to test that the we fragment in a way that
 # pleases other implementations, so we don't need the peer to fragment
-requires_gnutls
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
@@ -6257,7 +6421,6 @@ run_test    "DTLS fragmenting: gnutls server, DTLS 1.2" \
             -c "fragmenting handshake message" \
             -C "error"
 
-requires_gnutls
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
@@ -6285,6 +6448,7 @@ requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 requires_gnutls
+requires_not_i686
 run_test    "DTLS fragmenting: gnutls client, DTLS 1.2" \
             "$P_SRV dtls=1 debug_level=2 \
              crt_file=data_files/server7_int-ca.crt \
@@ -6300,6 +6464,7 @@ requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_1
 requires_gnutls
+requires_not_i686
 run_test    "DTLS fragmenting: gnutls client, DTLS 1.0" \
             "$P_SRV dtls=1 debug_level=2 \
              crt_file=data_files/server7_int-ca.crt \
@@ -6637,8 +6802,10 @@ run_test    "DTLS proxy: delay ChangeCipherSpec" \
 
 run_test    "DTLS reordering: Buffer out-of-order handshake message on client" \
             -p "$P_PXY delay_srv=ServerHello" \
-            "$P_SRV dgram_packing=0 cookies=0 dtls=1 debug_level=2" \
-            "$P_CLI dgram_packing=0 dtls=1 debug_level=2" \
+            "$P_SRV dgram_packing=0 cookies=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
+            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
             0 \
             -c "Buffering HS message" \
             -c "Next handshake message has been buffered - load"\
@@ -6651,8 +6818,10 @@ run_test    "DTLS reordering: Buffer out-of-order handshake message on client" \
 
 run_test    "DTLS reordering: Buffer out-of-order handshake message fragment on client" \
             -p "$P_PXY delay_srv=ServerHello" \
-            "$P_SRV mtu=512 dgram_packing=0 cookies=0 dtls=1 debug_level=2" \
-            "$P_CLI dgram_packing=0 dtls=1 debug_level=2" \
+            "$P_SRV mtu=512 dgram_packing=0 cookies=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
+            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
             0 \
             -c "Buffering HS message" \
             -c "found fragmented DTLS handshake message"\
@@ -6672,8 +6841,10 @@ run_test    "DTLS reordering: Buffer out-of-order handshake message fragment on
 requires_config_value_at_least "MBEDTLS_SSL_DTLS_MAX_BUFFERING" 1300
 run_test    "DTLS reordering: Buffer out-of-order hs msg before reassembling next" \
             -p "$P_PXY delay_srv=Certificate delay_srv=Certificate" \
-            "$P_SRV mtu=512 dgram_packing=0 cookies=0 dtls=1 debug_level=2" \
-            "$P_CLI dgram_packing=0 dtls=1 debug_level=2" \
+            "$P_SRV mtu=512 dgram_packing=0 cookies=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
+            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
             0 \
             -c "Buffering HS message" \
             -c "Next handshake message has been buffered - load"\
@@ -6692,8 +6863,10 @@ requires_config_value_at_least "MBEDTLS_SSL_DTLS_MAX_BUFFERING" 900
 requires_config_value_at_most "MBEDTLS_SSL_DTLS_MAX_BUFFERING" 1299
 run_test    "DTLS reordering: Buffer out-of-order hs msg before reassembling next, free buffered msg" \
             -p "$P_PXY delay_srv=Certificate delay_srv=Certificate" \
-            "$P_SRV mtu=512 dgram_packing=0 cookies=0 dtls=1 debug_level=2" \
-            "$P_CLI dgram_packing=0 dtls=1 debug_level=2" \
+            "$P_SRV mtu=512 dgram_packing=0 cookies=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
+            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
             0 \
             -c "Buffering HS message" \
             -c "attempt to make space by freeing buffered future messages" \
@@ -6707,8 +6880,10 @@ run_test    "DTLS reordering: Buffer out-of-order hs msg before reassembling nex
 
 run_test    "DTLS reordering: Buffer out-of-order handshake message on server" \
             -p "$P_PXY delay_cli=Certificate" \
-            "$P_SRV dgram_packing=0 auth_mode=required cookies=0 dtls=1 debug_level=2" \
-            "$P_CLI dgram_packing=0 dtls=1 debug_level=2" \
+            "$P_SRV dgram_packing=0 auth_mode=required cookies=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
+            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
             0 \
             -C "Buffering HS message" \
             -C "Next handshake message has been buffered - load"\
@@ -6721,8 +6896,10 @@ run_test    "DTLS reordering: Buffer out-of-order handshake message on server" \
 
 run_test    "DTLS reordering: Buffer out-of-order CCS message on client"\
             -p "$P_PXY delay_srv=NewSessionTicket" \
-            "$P_SRV dgram_packing=0 cookies=0 dtls=1 debug_level=2" \
-            "$P_CLI dgram_packing=0 dtls=1 debug_level=2" \
+            "$P_SRV dgram_packing=0 cookies=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
+            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
             0 \
             -C "Buffering HS message" \
             -C "Next handshake message has been buffered - load"\
@@ -6735,8 +6912,10 @@ run_test    "DTLS reordering: Buffer out-of-order CCS message on client"\
 
 run_test    "DTLS reordering: Buffer out-of-order CCS message on server"\
             -p "$P_PXY delay_cli=ClientKeyExchange" \
-            "$P_SRV dgram_packing=0 cookies=0 dtls=1 debug_level=2" \
-            "$P_CLI dgram_packing=0 dtls=1 debug_level=2" \
+            "$P_SRV dgram_packing=0 cookies=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
+            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
             0 \
             -C "Buffering HS message" \
             -C "Next handshake message has been buffered - load"\
@@ -6749,8 +6928,10 @@ run_test    "DTLS reordering: Buffer out-of-order CCS message on server"\
 
 run_test    "DTLS reordering: Buffer encrypted Finished message" \
             -p "$P_PXY delay_ccs=1" \
-            "$P_SRV dgram_packing=0 cookies=0 dtls=1 debug_level=2" \
-            "$P_CLI dgram_packing=0 dtls=1 debug_level=2" \
+            "$P_SRV dgram_packing=0 cookies=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
+            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 \
+            hs_timeout=2500-60000" \
             0 \
             -s "Buffer record from epoch 1" \
             -s "Found buffered record from current epoch - load" \
@@ -6790,9 +6971,9 @@ run_test    "DTLS reordering: Buffer encrypted Finished message, drop for fragme
 client_needs_more_time 2
 run_test    "DTLS proxy: 3d (drop, delay, duplicate), \"short\" PSK handshake" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 auth_mode=none \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
              psk=abc123" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
             -s "Extra-header:" \
@@ -6801,8 +6982,8 @@ run_test    "DTLS proxy: 3d (drop, delay, duplicate), \"short\" PSK handshake" \
 client_needs_more_time 2
 run_test    "DTLS proxy: 3d, \"short\" RSA handshake" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 auth_mode=none" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 \
              force_ciphersuite=TLS-RSA-WITH-AES-128-CBC-SHA" \
             0 \
             -s "Extra-header:" \
@@ -6811,8 +6992,8 @@ run_test    "DTLS proxy: 3d, \"short\" RSA handshake" \
 client_needs_more_time 2
 run_test    "DTLS proxy: 3d, \"short\" (no ticket, no cli_auth) FS handshake" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 auth_mode=none" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0" \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0" \
             0 \
             -s "Extra-header:" \
             -c "HTTP/1.0 200 OK"
@@ -6820,8 +7001,8 @@ run_test    "DTLS proxy: 3d, \"short\" (no ticket, no cli_auth) FS handshake" \
 client_needs_more_time 2
 run_test    "DTLS proxy: 3d, FS, client auth" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 auth_mode=required" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0" \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=required" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0" \
             0 \
             -s "Extra-header:" \
             -c "HTTP/1.0 200 OK"
@@ -6829,8 +7010,8 @@ run_test    "DTLS proxy: 3d, FS, client auth" \
 client_needs_more_time 2
 run_test    "DTLS proxy: 3d, FS, ticket" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=1 auth_mode=none" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=1" \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=1 auth_mode=none" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=1" \
             0 \
             -s "Extra-header:" \
             -c "HTTP/1.0 200 OK"
@@ -6838,8 +7019,8 @@ run_test    "DTLS proxy: 3d, FS, ticket" \
 client_needs_more_time 2
 run_test    "DTLS proxy: 3d, max handshake (FS, ticket + client auth)" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=1 auth_mode=required" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=1" \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=1 auth_mode=required" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=1" \
             0 \
             -s "Extra-header:" \
             -c "HTTP/1.0 200 OK"
@@ -6847,9 +7028,9 @@ run_test    "DTLS proxy: 3d, max handshake (FS, ticket + client auth)" \
 client_needs_more_time 2
 run_test    "DTLS proxy: 3d, max handshake, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 nbio=2 tickets=1 \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 nbio=2 tickets=1 \
              auth_mode=required" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 nbio=2 tickets=1" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 nbio=2 tickets=1" \
             0 \
             -s "Extra-header:" \
             -c "HTTP/1.0 200 OK"
@@ -6857,9 +7038,9 @@ run_test    "DTLS proxy: 3d, max handshake, nbio" \
 client_needs_more_time 4
 run_test    "DTLS proxy: 3d, min handshake, resumption" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 auth_mode=none \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
              psk=abc123 debug_level=3" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
              debug_level=3 reconnect=1 read_timeout=1000 max_resend=10 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -6871,9 +7052,9 @@ run_test    "DTLS proxy: 3d, min handshake, resumption" \
 client_needs_more_time 4
 run_test    "DTLS proxy: 3d, min handshake, resumption, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 auth_mode=none \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
              psk=abc123 debug_level=3 nbio=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
              debug_level=3 reconnect=1 read_timeout=1000 max_resend=10 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8 nbio=2" \
             0 \
@@ -6886,9 +7067,9 @@ client_needs_more_time 4
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 run_test    "DTLS proxy: 3d, min handshake, client-initiated renego" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 auth_mode=none \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
              psk=abc123 renegotiation=1 debug_level=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
              renegotiate=1 debug_level=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -6901,9 +7082,9 @@ client_needs_more_time 4
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 run_test    "DTLS proxy: 3d, min handshake, client-initiated renego, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 auth_mode=none \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
              psk=abc123 renegotiation=1 debug_level=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
              renegotiate=1 debug_level=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -6916,10 +7097,10 @@ client_needs_more_time 4
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 run_test    "DTLS proxy: 3d, min handshake, server-initiated renego" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 auth_mode=none \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
              psk=abc123 renegotiate=1 renegotiation=1 exchanges=4 \
              debug_level=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
              renegotiation=1 exchanges=4 debug_level=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -6932,10 +7113,10 @@ client_needs_more_time 4
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 run_test    "DTLS proxy: 3d, min handshake, server-initiated renego, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
-            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 auth_mode=none \
+            "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
              psk=abc123 renegotiate=1 renegotiation=1 exchanges=4 \
              debug_level=2 nbio=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=250-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
              renegotiation=1 exchanges=4 debug_level=2 nbio=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -6955,7 +7136,7 @@ not_with_valgrind # risk of non-mbedtls peer timing out
 run_test    "DTLS proxy: 3d, openssl server" \
             -p "$P_PXY drop=5 delay=5 duplicate=5 protect_hvr=1" \
             "$O_SRV -dtls1 -mtu 2048" \
-            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=250-60000 tickets=0" \
+            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=500-60000 tickets=0" \
             0 \
             -c "HTTP/1.0 200 OK"
 
@@ -6965,7 +7146,7 @@ not_with_valgrind # risk of non-mbedtls peer timing out
 run_test    "DTLS proxy: 3d, openssl server, fragmentation" \
             -p "$P_PXY drop=5 delay=5 duplicate=5 protect_hvr=1" \
             "$O_SRV -dtls1 -mtu 768" \
-            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=250-60000 tickets=0" \
+            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=500-60000 tickets=0" \
             0 \
             -c "HTTP/1.0 200 OK"
 
@@ -6975,7 +7156,7 @@ not_with_valgrind # risk of non-mbedtls peer timing out
 run_test    "DTLS proxy: 3d, openssl server, fragmentation, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5 protect_hvr=1" \
             "$O_SRV -dtls1 -mtu 768" \
-            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=250-60000 nbio=2 tickets=0" \
+            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=500-60000 nbio=2 tickets=0" \
             0 \
             -c "HTTP/1.0 200 OK"
 
@@ -6985,7 +7166,7 @@ not_with_valgrind # risk of non-mbedtls peer timing out
 run_test    "DTLS proxy: 3d, gnutls server" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$G_SRV -u --mtu 2048 -a" \
-            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=250-60000" \
+            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=500-60000" \
             0 \
             -s "Extra-header:" \
             -c "Extra-header:"
@@ -6996,7 +7177,7 @@ not_with_valgrind # risk of non-mbedtls peer timing out
 run_test    "DTLS proxy: 3d, gnutls server, fragmentation" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$G_SRV -u --mtu 512" \
-            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=250-60000" \
+            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=500-60000" \
             0 \
             -s "Extra-header:" \
             -c "Extra-header:"
@@ -7007,7 +7188,7 @@ not_with_valgrind # risk of non-mbedtls peer timing out
 run_test    "DTLS proxy: 3d, gnutls server, fragmentation, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$G_SRV -u --mtu 512" \
-            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=250-60000 nbio=2" \
+            "$P_CLI dgram_packing=0 dtls=1 hs_timeout=500-60000 nbio=2" \
             0 \
             -s "Extra-header:" \
             -c "Extra-header:"