[SR-Users] Question about more complicated rtpproxy scenario

Hi to all, please could somevody help me with more complicated rtpproxy scenario? I still cannot understand how to make it working. We have SBC based on kamailio 3.2.3. Everything seems to work until I want to translate all SDP messages by SBC IP address (for both sides). Moreover, I need to translate ipv4 to ipv6 and vice versa too. I found some example script how to achieve ipv4 to ipv6 and vice versa and I am tryinf to use it. It is relatively easy to translate all RFC addresses to one public IP, but I need to translate even our public IPS into SBC IP. I made some rtpproxy sets: modparam("rtpproxy", "rtpproxy_sock", "1 == udp:127.0.0.1:7722") (EXTRA_OPTS="-l SBC_IP") for internal net to external modparam("rtpproxy", "rtpproxy_sock", "2 == udp:127.0.0.1:7723") (EXTRA_OPTS="-l /SBC_IP -6 SBC_IP6") for ipv4 to ipv6 modparam("rtpproxy", "rtpproxy_sock", "3 == udp:127.0.0.1:7724") (EXTRA_OPTS="-l SBC_IP -6 /SBC_IP6") for ipv6 to ipv4 modparam("rtpproxy", "rtpproxy_sock", "4 == udp:127.0.0.1:7725") (EXTRA_OPTS="-l SBC_IP/SBC_IP) for external to internal but I cannot make it working. Either there are problems with "incorrect port 0 in reply from rtp proxy" or SDP gets malformed because of more times rtpproxy_manage(). Please can you help me with some basic hint, where into routing logic put rtpproxy_manage() and set_rtpproxy_set() ? Moreover, how to check if rtpproxy was already forced? I could not find any example of forcing RTP proxy for all calls for both sides. I need this because entire RTP traffic has to go across SBC. And my internal IPs are not private. Thank you for any hint, Lukas Macura