diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 0b87072..e089373 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -4823,7 +4823,7 @@
             -c "Read from server: 1 bytes read"
 
 # A test for extensions in SSLv3
-
+requires_max_content_len 4096
 requires_config_enabled MBEDTLS_SSL_PROTO_SSL3
 run_test    "SSLv3 with extensions, server side" \
             "$P_SRV min_version=ssl3 debug_level=3" \
@@ -5073,6 +5073,7 @@
             -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" \
             "$P_SRV response_size=16384 min_version=ssl3 arc4=1 force_ciphersuite=TLS-RSA-WITH-RC4-128-SHA" \
@@ -6094,6 +6095,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 4096
 run_test    "DTLS fragmenting: none (for reference)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -6114,6 +6116,7 @@
 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)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -6138,6 +6141,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 4096
 run_test    "DTLS fragmenting: server only (more) (max_frag_len)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -6158,6 +6162,7 @@
 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)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=none \
              crt_file=data_files/server7_int-ca.crt \
@@ -6185,6 +6190,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: client-initiated, server only (max_frag_len), proxy MTU" \
             -p "$P_PXY mtu=1110" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=none \
@@ -6206,6 +6212,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: client-initiated, both (max_frag_len)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -6233,6 +6240,7 @@
 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 \
@@ -6253,6 +6261,7 @@
 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)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -6272,6 +6281,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_max_content_len 4096
 run_test    "DTLS fragmenting: client (MTU)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -6291,6 +6301,7 @@
 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)" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
              crt_file=data_files/server7_int-ca.crt \
@@ -6310,6 +6321,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: both (MTU=1024)" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6335,6 +6347,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: both (MTU=512)" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6366,6 +6379,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU: auto-reduction" \
             -p "$P_PXY mtu=508" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6390,6 +6404,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU: auto-reduction" \
             -p "$P_PXY mtu=508" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6413,6 +6428,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, simple handshake (MTU=1024)" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6442,6 +6458,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, simple handshake (MTU=512)" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6465,6 +6482,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_DTLS
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, simple handshake, nbio (MTU=1024)" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6491,6 +6509,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, simple handshake, nbio (MTU=512)" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6527,6 +6546,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, resumed handshake" \
             -p "$P_PXY mtu=1450" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6556,6 +6576,7 @@
 requires_config_enabled MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_CHACHAPOLY_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, ChachaPoly renego" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6588,6 +6609,7 @@
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, AES-GCM renego" \
             -p "$P_PXY mtu=512" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6620,6 +6642,7 @@
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_CCM_C
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, AES-CCM renego" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6653,6 +6676,7 @@
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_CIPHER_MODE_CBC
 requires_config_enabled MBEDTLS_SSL_ENCRYPT_THEN_MAC
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, AES-CBC EtM renego" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6685,6 +6709,7 @@
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_CIPHER_MODE_CBC
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU, AES-CBC non-EtM renego" \
             -p "$P_PXY mtu=1024" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6714,6 +6739,7 @@
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
 client_needs_more_time 2
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU + 3d" \
             -p "$P_PXY mtu=512 drop=8 delay=8 duplicate=8" \
             "$P_SRV dgram_packing=0 dtls=1 debug_level=2 auth_mode=required \
@@ -6738,6 +6764,7 @@
 requires_config_enabled MBEDTLS_AES_C
 requires_config_enabled MBEDTLS_GCM_C
 client_needs_more_time 2
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: proxy MTU + 3d, nbio" \
             -p "$P_PXY mtu=512 drop=8 delay=8 duplicate=8" \
             "$P_SRV dtls=1 debug_level=2 auth_mode=required \
@@ -6763,6 +6790,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 requires_gnutls
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: gnutls server, DTLS 1.2" \
             "$G_SRV -u" \
             "$P_CLI dtls=1 debug_level=2 \
@@ -6778,6 +6806,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_1
 requires_gnutls
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: gnutls server, DTLS 1.0" \
             "$G_SRV -u" \
             "$P_CLI dtls=1 debug_level=2 \
@@ -6801,6 +6830,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 requires_gnutls
 requires_not_i686
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: gnutls client, DTLS 1.2" \
             "$P_SRV dtls=1 debug_level=2 \
              crt_file=data_files/server7_int-ca.crt \
@@ -6817,6 +6847,7 @@
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_1
 requires_gnutls
 requires_not_i686
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: gnutls client, DTLS 1.0" \
             "$P_SRV dtls=1 debug_level=2 \
              crt_file=data_files/server7_int-ca.crt \
@@ -6830,6 +6861,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: openssl server, DTLS 1.2" \
             "$O_SRV -dtls1_2 -verify 10" \
             "$P_CLI dtls=1 debug_level=2 \
@@ -6844,6 +6876,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_1
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: openssl server, DTLS 1.0" \
             "$O_SRV -dtls1 -verify 10" \
             "$P_CLI dtls=1 debug_level=2 \
@@ -6858,6 +6891,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: openssl client, DTLS 1.2" \
             "$P_SRV dtls=1 debug_level=2 \
              crt_file=data_files/server7_int-ca.crt \
@@ -6871,6 +6905,7 @@
 requires_config_enabled MBEDTLS_RSA_C
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_1
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: openssl client, DTLS 1.0" \
             "$P_SRV dtls=1 debug_level=2 \
              crt_file=data_files/server7_int-ca.crt \
@@ -6890,6 +6925,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, gnutls server, DTLS 1.2" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$G_NEXT_SRV -u" \
@@ -6907,6 +6943,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_1
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, gnutls server, DTLS 1.0" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$G_NEXT_SRV -u" \
@@ -6924,6 +6961,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, gnutls client, DTLS 1.2" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$P_SRV dtls=1 debug_level=2 \
@@ -6940,6 +6978,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_1
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, gnutls client, DTLS 1.0" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$P_SRV dtls=1 debug_level=2 \
@@ -6961,6 +7000,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, openssl server, DTLS 1.2" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$O_SRV -dtls1_2 -verify 10" \
@@ -6978,6 +7018,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_1
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, openssl server, DTLS 1.0" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$O_SRV -dtls1 -verify 10" \
@@ -6995,6 +7036,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, openssl client, DTLS 1.2" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$P_SRV dtls=1 debug_level=2 \
@@ -7013,6 +7055,7 @@
 requires_config_enabled MBEDTLS_ECDSA_C
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_1
 client_needs_more_time 4
+requires_max_content_len 2048
 run_test    "DTLS fragmenting: 3d, openssl client, DTLS 1.0" \
             -p "$P_PXY drop=8 delay=8 duplicate=8" \
             "$P_SRV dgram_packing=0 dtls=1 debug_level=2 \