I looked at the trace and the R-URI in the looping ACK seems to be considered as local address or alias.

Is that in the listen list or in the alias list? Or do you use domain module with register myself and that IP is there?

The list of aliases and listen sockets is not using any static size, so theoretically can just be as much as pkg memory allows.

Cheers,
Daniel

On 17/09/15 11:19, Daniel-Constantin Mierla wrote:
Hello,

can you send ngrep capture of such ack:

ngrep -d any -qt -W byline port 5060

For listing the ports via kamcmd be sure that the parameters with buffer sizes for ctl module are big enough.

Cheers,
Daniel

On 17/09/15 11:00, Sven Neuhaus wrote:
Hi,

we've observed a bug with Kamailio (we are using 4.3.1):

When using more than 81 "listen" statements, Kamailio starts acting up.
In our case, it handles ACK packets (that follow "200 OK" messages)
incorrectly: It forwards them to itself (src ip == dst ip) in a garbled
form (on the loopback interface).

We need more than 80 "listen" statements at the moment so I hope there's
a way to increase the limit substantially.

The number of file handles has been set to 32000 btw.

Regards,
-Sven Neuhaus




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-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com
Kamailio Advanced Training, Sep 28-30, 2015, in Berlin - http://asipto.com/u/kat

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com
Kamailio Advanced Training, Sep 28-30, 2015, in Berlin - http://asipto.com/u/kat