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IPv4/IPv6 Fun Communicating between IPv4 client and IPv6 client through a proxy Record-Route: <sip:2001:db8::1;lr> Record-Route: <sip:192.0.2.1;lr> Mixed communication across a path of proxies Mixed communication: IPv6 for SIP, IPv4 for media
IPv6 and SDP Only allows a single IP address per media stream (“c=“ parameter) c=IN IP4 192.168.20.12 c=IN IP6 2001:db8:34a5::1234 Multiple proposals for additional SDP parameters ex. ANAT - RFC 4091 & 4092 – now deprecated by ICE The IETF way forward is ICE – RFC 5245
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Marc Would Want Me To Mention... sipforum.org/mailman/listinfo/ipv6