IƱaki Baz Castillo writes:
1.6.4. force_rtp_proxy([flags [, ip_address]])
-r flags that IP address in SDP should be trusted. Without this
flag, nathelper ignores address in the SDP and uses source address of the SIP message as media address which is passed to the RTP proxy.
i don't understand what chaining of rtpproxies has to do with trusting of ip addresses. my proxy can receive a request from anyone from the internet and if that someone is behind nat and his proxy happens to use rtpproxy, then chaining with my rtpproxy does not work if some kind of trust relationship between these two proxies is needed.
-- juha