[SR-Users] RTPEngine IPv4 to IPv6 bridging returning c=IN IP4 0.0.0.0 on answer?

This is probably very likely a configuration issue on my part, but I wanted to check before reporting an RTPEngine bug... Thank you for any pointers or suggestions. This is a multi-homed server where em1: INTERNAL_IPv4 & GLOBAL_IPv6 em2: EXTERNAL_IPv4 Note that below, the IPv6 address on my server is the same on priv and pub and is reachable from "internal" and "external" endpoints. I have it set this way as I eventually want to use ICE and have it create the proper IPv4/IPv6 candidates regardless of the RTPEngine --interface. I'm running RTPEngine with the following: /usr/sbin/rtpengine --table=0 --interface=pub/EXTERNAL_IPv4 --interface=pub/GLOBAL_IPv6 --interface=priv/INTERNAL_IPv4 --interface=priv/GLOBAL_IPv6 --listen-ng=127.0.0.1:12221 --tos=184 --log-level=7 --pidfile=/run/rtpengine/rtpengine.test.pid I'm trying to bridge an IPv4-initated call to an IPv6 carrier. The call seems to flow properly until the carrier's SDP is passed through RTPEngine on answer. The snippets are here, and I have attached the full log. [TdBe4MJa1DC4teIllJkqq6U-PAw9Zh4y] Received command 'answer' from 127.0.0.1:38786 [TdBe4MJa1DC4teIllJkqq6U-PAw9Zh4y] Dump for 'answer' from 127.0.0.1:38786: { "sdp": "v=0 o=FreeSWITCH 1424799070 1424799071 IN IP6 CARRIER_IPv6 s=FreeSWITCH c=IN IP6 CARRIER_IPv6 t=0 0 m=audio 24308 RTP/AVP 0 101 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=rtcp:24309 IN IP6 CARRIER_IPv6 The CARRIER_IPv6 gets converted as follows with 0.0.0.0 in place of what should be the address of my RTPEngine instance. Shouldn't it be returning the IPv4 address of my RTPEngine instance (either priv or pub as called from Kamailio)? [TdBe4MJa1DC4teIllJkqq6U-PAw9Zh4y] Replying to 'answer' from 127.0.0.1:38786 [TdBe4MJa1DC4teIllJkqq6U-PAw9Zh4y] Response dump for 'answer' to 127.0.0.1:38786: { "sdp": "v=0 o=FreeSWITCH 1424799070 1424799071 IN IP4 0.0.0.0 s=FreeSWITCH c=IN IP4 0.0.0.0 t=0 0 m=audio 38914 RTP/SAVP 0 101 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv a=rtcp:38915 a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:Jby5IPt4WlNySLd66eK+Mcky8yJeUwp7dWH7W3aO -- Anthony - https://messinet.com/ - https://messinet.com/~amessina/gallery 8F89 5E72 8DF0 BCF0 10BE 9967 92DC 35DC B001 4A4E