[SR-Users] Wrong src-adress in packets sent from Kamailio when using listen=

Hi! I've the following setup: Teleco <-> Kamailio <-> Asterisk(s) The proxy has one public IP (say 1.2.3.4) and one private (10.0.0.1). The asterisk-pbx:es has private adresses (10.0.0.2 in this example) I noticed that if I bind like this in kamilio.cfg listen=tcp:1.2.3.4:5060 listen=udp:1.2.3.4:5060 listen=tcp:10.0.0.1:5060 listen=udp:10.0.0.1:5060 Then if a call comes in from the Telco to Kamailio (1.2.3.4), kamailio should forward the SIP-packet from it's private address (10.0.0.1) to asterisk (10.0.0.2) However, the source address of the packets sent from Kamilio to Asterisk is wrong - it uses the public ip. Like this (tcpdump output): 15:02:08.999642 IP 1.2.3.4.sip > 10.0.0.1.5060: SIP, length: 1346 15:02:09.474525 IP 1.2.3.4.sip > 10.0.0.1.5060: SIP, length: 1346 15:02:10.474524 IP 1.2.3.4.sip > 10.0.0.1.5060: SIP, length: 1346 15:02:12.474525 IP 1.2.3.4.sip > 10.0.0.1.5060: SIP, length: 1346 Obviously kamailio doesn't get any answers here. The packet goes out of the right interface, but with the wrong src-address. However, if I remove the lines with "listen=" in kamailio.cfg to allow kamilio to bind to all interfaces the src-address is correct and everything works! (I've also done some tests with icmp and telnet and the src-addr seems right in all these cases.) Is this a bug or am I missing something here? -- Johan Wilfer