diff --git a/src/mod/endpoints/mod_sofia/sofia.c b/src/mod/endpoints/mod_sofia/sofia.c
index 028a484538..cc9364741b 100644
--- a/src/mod/endpoints/mod_sofia/sofia.c
+++ b/src/mod/endpoints/mod_sofia/sofia.c
@@ -545,7 +545,7 @@ void *SWITCH_THREAD_FUNC sofia_profile_thread_run(switch_thread_t *thread, void
 							  TAG_IF(sofia_test_pflag(profile, PFLAG_TLS), NUTAG_SIPS_URL(profile->tls_bindurl)), 
 							  TAG_IF(sofia_test_pflag(profile, PFLAG_TLS), NUTAG_CERTIFICATE_DIR(profile->tls_cert_dir)), 
 							  TAG_IF(sofia_test_pflag(profile, PFLAG_TLS), TPTAG_TLS_VERSION(profile->tls_version)), 
-							  NTATAG_UDP_MTU(65536), 
+							  TAG_IF(!strchr(profile->sipip, ':'), NTATAG_UDP_MTU(65536)), 
 							  NTATAG_SERVER_RPORT(profile->rport_level), 
 							  TAG_IF(tportlog, TPTAG_LOG(1)), 
 							  TAG_END());	/* Last tag should always finish the sequence */