Hi all, My freeswitch server has two NICs eth0 and eth1. eth0 - Connected to internet for public/remote SIP Gateways eth1 - Connected to ISP(non internet) SIP server directly. Now to have all external gateways working together i need to specify which sip-ip, rtp-ip to be used in each gateway. But i can see these settings can be done only in external.xml So if i specify IP of any eth0 or eth1, all external gateways (be public or local ISP) registrations go using VIA tag of that very IP address, which is causing failed registrations. If i give eth0 IP then public SIP gateways work, but not local SIP SIP. If i give eth1 IP then local ISP SIP gateway work, but not public/remote gateways. How can such situations be handled. Is there any way to specify via header/sip,rtp-ip per gateway. Thanks Vishal.