Hello,

I have the following setup:

Kamailio:

  Public Interface 70.36.25.65

  Private Interface 10.168.10.227

Freeswitch:

   Private Interface 10.168.10.200

I’m routing calls from kamailio to freeswitch, but when I try to hang up the call the freeswitch sends the BYE to the public address(70.36.25.65) and not to the private address 10.168.10.227. 200OK and ACK work correctly. It’s only the BYE that has an issue.

Showing INVITES:

Client Invite:

T 82.80.164.63:53871 -> 70.36.25.65:5099 [AP]

INVITE sip:+972549428460@70.36.25.65:5099 SIP/2.0.

Via: SIP/2.0/TCP 10.0.0.42:51619;branch=z9hG4bK-524287-1---52dcc73ec891de14;rport.

Max-Forwards: 70.

Contact: <sip:972545234585@82.80.164.63:51620;rinstance=1f9d21b54116df89;transport=tcp>.

To: <sip:+972549428460@70.36.25.65:5099>.

From: "972545234585"<sip:972545234585@70.36.25.65:5099>;tag=902c5325.

Kamailio to FS:

T 10.168.10.227:46506 -> 10.168.10.200:5080 [AP]

INVITE sip:+972549428460@70.36.25.65:5099 SIP/2.0.

Record-Route: <sip:70.36.25.65:5099;transport=tcp;lr=on;ftag=902c5325;nat=yes>.

Via: SIP/2.0/TCP 70.36.25.65:5099;branch=z9hG4bK1117.1b91cfe0632bd6f036b308f85898e862.1;i=1.

Via: SIP/2.0/TCP 10.0.0.42:51619;received=82.80.164.63;branch=z9hG4bK-524287-1---9b6758521ff0f528;rport=53871.

Max-Forwards: 69.