Look at http://tools.ietf.org/html/draft-ietf-sipping-v6-transition-07
> -----Original Message----- > From: [email protected] [mailto:sip- > [email protected]] On Behalf Of Klaus Darilion > Sent: Wednesday, February 17, 2010 8:44 AM > To: sip-implementors > Subject: [Sip-implementors] ipv6/ipv4 interworking > > Hi! > > Consider the simple scenario: caller is dual-stacked and supports IPv4 > and IPv6. When creating the SDP, the caller does not know if callee use > IPv4-only, IPv6-only or is dual-stacked too. > > SIP probably is not an issue and will be done by the proxies - but what > about finding the proper IP version for the RTP session. Should the > caller announce 2 streams with different IP versions? Or should it try > one IP version first, and if the SDP is rejected retry SDP with other > IP > version? > > Is this behavior somewhere described (best practice)? > > Thanks > klaus _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
