On Fri, Jul 25, 2008 at 12:58, Benny Prijono <bennylp at pjsip.org> wrote: > On Fri, Jul 25, 2008 at 11:53 AM, Ondrej Sterbak <sterbo at email.cz> wrote: >> >> OK, I will investigate this matter more and let you know about the >> router(s) which could rewrite the headers. But do you have an idea why >> the message sent by sipsak goes through without any change? >> > > Does it have the same private IP as the sender's host? Yes, it does. It is one of the former REGISTER messages from PJSUA with different username and after OpenSER restart. I will try to wireshark all of this to find out more.