[Spce-user] Issue with RTP proxy on dual interface host

Andrew Pogrebennyk apogrebennyk at sipwise.com
Mon Aug 17 04:11:28 EDT 2015

On 08/17/2015 10:03 AM, Andrew Yager wrote:
> Thanks; can easily make that change. We had specified sip_ext as the
> provider insists on sending SIP OPTIONS packets, which in the default
> kamailio.cfg.tt2 for the proxy:
> [% FOREACH extip IN sip_ext_ips -%] || $rd == "[% extip %]" [% END %]
> does not add the IPs for interfaces which aren't "sip_ext", and so the
> "OPTIONS" packets were just ignored.
> Is the best thing to manually patch the .tt2 file to deal with this and
> preserve this through updates, or is there another way to make this be
> honoured?

Thanks, all is clear now. No problem, you may leave the sip_ext on the
second interface for now, it doesn't harm. The only thing I have
recognized when having more than one sip_ext interface in the
network.yml is that the LB is masking the internal Contact to
sip:ngcp_lb@[% sip_ext_ips.0 %] and in that case this was awkward
because the customer had extra interface listed before the public
sip_ext, but I see no issue with marking all of them as sip_ext in
general. The patch is fine too - whatever you prefer.


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