[Serusers] rtpproxy and IPv6/IPv4 translator

Hello I've been installed last version of SER and rtpproxy on the same machine. I can register IPv4 and IPv6 users and SDP are rewritten OK. But I would like to test a different scenario and I don't know whether it could be possible. The idea is IPv6 only SIP proxy IPv4 only SIP Proxy with nathelper SIP Proxy and registrar ---------- and rtpproxy -------------and registrar ipv6mydomain.com ipv4mydomain.com I want to separate functions and make config files easier. And I want that all the calls between the two domains are through the rtpproxy. But it presents several problems, at least, I don't find solution - When ipv6-SER DNS lookups ipv4mydomain, it will find an A entry with IPv4 address. How can I specify to forward messages to intermediate proxy in this case? In other words, if DNS domain==ipv4 then forward to intermediate proxy - Proxy with nathelper does not register users. So it just have to: - if message is ipv6 --> if (af == inet6) if (force_rtp_proxy("FAEI")) t_on_reply("1"); - if message is ipv4 --> if (af == inet) if (force_rtp_proxy("FAIE")) t_on_reply("1"); Is it correct?. Well, maybe could be another questions that I no see. I would thank if you could give me your opinion. Is there any problem to do this scenario? What things should I take into account? Could you give me some clues to write config files? Thank you very much. Curro