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
