[Spce-user] Dummy interface causing inbound call failure

Kevin Boddy kevin.boddy at firstnet.co.za
Fri Sep 28 09:52:00 EDT 2018


I’ll have to run some test calls again to provide the logs.

Yes the dummy0 interface is up when looking at ifconfig.


Kevin Boddy
ISP Technical

FirstNet Technology Services

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Disclaimer: http://www.firstnet.co.za/disclaimer.htmFrom: Spce-user <spce-user-bounces at lists.sipwise.com> On Behalf Of Daniel Grotti
Sent: Friday, 28 September 2018 3:50 PM
To: spce-user at lists.sipwise.com
Subject: Re: [Spce-user] Dummy interface causing inbound call failure

does the command "ifconfig" shows you that the dummy0 is actually up?



On 09/28/2018 02:34 PM, Andrew Pogrebennyk wrote:
see my comments inline.

On 09/25/2018 08:23 PM, Kevin Boddy wrote:
When I have the sip_int type configured on the dummy0 interface then Kamailio seems to stop routing the inbound calls to my subscriber for some reason. It gives this error below.

Sep 25 13:39:54 spce proxy[1958]: ERROR: sl [sl_funcs.c:362]: sl_reply_error(): stateless error reply used: I'm terribly sorry, server error occurred (6/SL)
Could you please send me the complete kamailio-proxy.log prior to this error?

 If I move sip_int back to the localhost interface then everything works fine.
Is this dummy0 interface still required for Audiocodes work around?

Does it work if you disable the dummy interface? What's your experience?

I have not tried recently, but before the calls from AC would be dropped after 32 seconds because it is sending incorrect Route headers in the ACK message.

You would notice that it's replacing<> with some other IP.  If that is still a problem, however, there is another approach with mr6.4.1 and upcoming mr6.5.1, where we have topology hiding module enabled (kamailio.lb.topos.enable in config.yml). Rather experimental but also worth trying if you have an issue with Audiocodes.



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