I am using Kamailio 4.1.x with NAT enabled. When I want to REGISTER using
my desktop client which is Linphone everything is find with any username.
But on Android some users can REGISTER and someusers can not. I captured
SIP packets and the only difference between packets on Android devices and
packets on Desktop client is that on my desktop "received" and "rport"
are
not added by Kamailio in response messages. Any idea on what is happening
here?