diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index f55c31f..7a9f8a5 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -2423,6 +2423,7 @@
 
 requires_config_enabled MBEDTLS_SSL_DTLS_CONNECTION_ID
 requires_config_enabled MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
+requires_max_content_len 512
 run_test    "Connection ID: Cli+Srv enabled, variable buffer lengths, MFL=512" \
             "$P_SRV dtls=1 cid=1 cid_val=dead debug_level=2" \
             "$P_CLI force_ciphersuite="TLS-ECDHE-ECDSA-WITH-AES-128-CCM-8" max_frag_len=512 dtls=1 cid=1 cid_val=beef" \
@@ -2436,6 +2437,7 @@
 
 requires_config_enabled MBEDTLS_SSL_DTLS_CONNECTION_ID
 requires_config_enabled MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
+requires_max_content_len 1024
 run_test    "Connection ID: Cli+Srv enabled, variable buffer lengths, MFL=1024" \
             "$P_SRV dtls=1 cid=1 cid_val=dead debug_level=2" \
             "$P_CLI force_ciphersuite="TLS-ECDHE-ECDSA-WITH-AES-128-CCM-8" max_frag_len=1024 dtls=1 cid=1 cid_val=beef" \
@@ -6711,8 +6713,8 @@
             -c "Read from server: 1 bytes read"
 
 # A test for extensions in SSLv3
-
 requires_config_enabled MBEDTLS_SSL_PROTO_SSL3
+requires_max_content_len 4096
 run_test    "SSLv3 with extensions, server side" \
             "$P_SRV min_version=ssl3 debug_level=3" \
             "$P_CLI force_version=ssl3 tickets=1 max_frag_len=4096 alpn=abc,1234" \
@@ -6961,6 +6963,7 @@
             -s "Read from client: $MAX_CONTENT_LEN bytes read"
 
 # Test for large server packets
+# The tests below fail when the server's OUT_CONTENT_LEN is less than 16384.
 requires_config_enabled MBEDTLS_SSL_PROTO_SSL3
 run_test    "Large server packet SSLv3 StreamCipher" \
             "$P_SRV response_size=16384 min_version=ssl3 arc4=1 force_ciphersuite=TLS-RSA-WITH-RC4-128-SHA" \
@@ -7982,6 +7985,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 4096
 run_test    "DTLS fragmenting: none (for reference)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -8002,6 +8006,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: server only (max_frag_len)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -8026,6 +8031,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 4096
 run_test    "DTLS fragmenting: server only (more) (max_frag_len)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -8046,6 +8052,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: client-initiated, server only (max_frag_len)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=none \
              crt_file=data_files/server7_int-ca.crt \
@@ -8073,6 +8080,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: client-initiated, server only (max_frag_len), proxy MTU" \
             -p "$P_PXY mtu=1110" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=none \
@@ -8094,6 +8102,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: client-initiated, both (max_frag_len)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -8121,6 +8130,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: client-initiated, both (max_frag_len), proxy MTU" \
             -p "$P_PXY mtu=1110" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8141,6 +8151,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_max_content_len 4096
 run_test    "DTLS fragmenting: none (for reference) (MTU)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -8160,6 +8171,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_max_content_len 4096
 run_test    "DTLS fragmenting: client (MTU)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -8179,6 +8191,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: server (MTU)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -8198,6 +8211,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: both (MTU=1024)" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8223,6 +8237,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: both (MTU=512)" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8254,6 +8269,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU: auto-reduction (not valgrind)" \
             -p "$P_PXY mtu=508" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8278,6 +8294,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU: auto-reduction (with valgrind)" \
             -p "$P_PXY mtu=508" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8301,6 +8318,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, simple handshake (MTU=1024)" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8330,6 +8348,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, simple handshake (MTU=512)" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8353,6 +8372,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, simple handshake, nbio (MTU=1024)" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8379,6 +8399,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, simple handshake, nbio (MTU=512)" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8415,6 +8436,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, resumed handshake" \
             -p "$P_PXY mtu=1450" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8444,6 +8466,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_CHACHAPOLY_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, ChachaPoly renego" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8476,6 +8499,7 @@
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, AES-GCM renego" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8508,6 +8532,7 @@
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_CCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, AES-CCM renego" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8541,6 +8566,7 @@
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_CIPHER_MODE_CBC
 requires_config_enabled MBEDTLS_SSL_ENCRYPT_THEN_MAC
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, AES-CBC EtM renego" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8573,6 +8599,7 @@
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_CIPHER_MODE_CBC
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, AES-CBC non-EtM renego" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8602,6 +8629,7 @@
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
 client_needs_more_time 2
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU + 3d" \
             -p "$P_PXY mtu=512 drop=8 delay=8 duplicate=8" \
             "$P_SRV dgram_packing=0 dtls=1 debug_level=2 auth_mode=required \
@@ -8626,6 +8654,7 @@
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
 client_needs_more_time 2
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU + 3d, nbio" \
             -p "$P_PXY mtu=512 drop=8 delay=8 duplicate=8" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -8651,6 +8680,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 requires_gnutls
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: gnutls server, DTLS 1.2" \
             "$G_SRV -u" \
             "$P_CLI dtls=1 debug_level=2 \
@@ -8689,6 +8719,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 requires_gnutls
 requires_not_i686
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: gnutls client, DTLS 1.2" \
             "$P_SRV dtls=1 debug_level=2 \
              crt_file=data_files/server7_int-ca.crt \
@@ -8718,6 +8749,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: openssl server, DTLS 1.2" \
             "$O_SRV -dtls1_2 -verify 10" \
             "$P_CLI dtls=1 debug_level=2 \
@@ -8746,6 +8778,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: openssl client, DTLS 1.2" \
             "$P_SRV dtls=1 debug_level=2 \
              crt_file=data_files/server7_int-ca.crt \
@@ -8778,6 +8811,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, gnutls server, DTLS 1.2" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$G_NEXT_SRV -u" \
@@ -8812,6 +8846,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, gnutls client, DTLS 1.2" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$P_SRV dtls=1 debug_level=2 \
@@ -8849,6 +8884,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, openssl server, DTLS 1.2" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$O_SRV -dtls1_2 -verify 10" \
@@ -8883,6 +8919,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, openssl client, DTLS 1.2" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$P_SRV dtls=1 debug_level=2 \
@@ -9981,6 +10018,7 @@
 requires_config_enabled MBEDTLS_MEMORY_DEBUG
 requires_config_enabled MBEDTLS_MEMORY_BUFFER_ALLOC_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 16384
 run_tests_memory_after_hanshake
 
 # Final report