Sergey, these days Rtpproxy can also do ipv4-ipv6 gatewaying, media pinning/topology hiding, session recording, MOH/prompt injection, media timeout notification, media accounting generation and stats collection. As far as original question goes, I suggest you guys check some IPv6 scenarios available in the voiptests package (one level up from the rtpproxy itself on github), it's running on Travis, but you can easily run it on local box. If you still cannot get it working, please send us more detailed report including command line options you are using to run the rtpp. Some call traces would be helpful too. On Jun 7, 2016 1:56 PM, "Sergey Okhapkin" <sos(a)sokhapkin.dyndns.org> wrote: