Thanks Loic, Yes, thats correct Kernel decides the interface to take. That is why I want to figure out if we have any way to foresee that decision !
I got to know a new thing: onsend_route: http://www.kamailio.org/dokuwiki/doku.php/features:new-in-3.0.x#onsend_route I will try and make use of this route and see if it helps me select the rtp-proxy instance to use. Here is how it looks like: [image: Inline image 2] For Inbound leg all is fine, but for outbound call leg, if I know which Interface it is taking I can engage the rtpproxy instance for this. Regards, Sammy On Wed, Jul 13, 2016 at 11:08 AM, Loic Chabert <chabert.loic...@gmail.com> wrote: > Hi, > Interface selection is done by kernel when routing lookup is done, no ? > If you have the same destination and multiple interface to reach it, > kernel will chose the best one (according metric values). > > If you want to force trafic to go through an interface, interface must be > attached to different routing table (rt_table), and with ip rule command, > you can select routing table for this packet (using packet marking). > > Another recent kernel feature is VRF: > https://www.kernel.org/doc/Documentation/networking/vrf.txt > > Regards. > > Le 12 juil. 2016 19:45, "SamyGo" <govoi...@gmail.com> a écrit : > >> Hi, >> >> Question: >> Is there a function in kamailio to get the interface/listen IP kamailio >> would use to route a packet out for a domain / ip ? >> >> Example: >> >> $avp(interface_ip) = find_interface_for_request("192.168.12.123"); >> >> And it gives me the Kamailio's Listen address that would be used for >> sending call out to this IP/Domain ! >> >> I've a weird situation where a multi-homed kamailio with about 7 >> different interfaces needs to send call out, I've so many RTProxy instances >> to engage but I can't decide which instance to engage since I do not know >> which Interface the Packet would route out from. >> >> Regards, >> Sammy >> >> >> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list >> sr-users@lists.sip-router.org >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >> >> > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > >
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