[OpenSIPS-Devel] [opensips] Opensips 1.8.3, wrong IP and Port combination while sending the response. (#737)

[suryaveerc]

I am trying to run OpenSips presence server on kubernetes but it's not working The reason for it is what I found is the wrong IP - Port combination choosen by OpensSips to send the response 200

Below is the tcpdump 

tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes 
04:34:30117024 IP (tos 0x0, ttl 63, id 10208, offset 0, flags [DF], proto UDP (17), length 999) 
    **1024424040351 > 102447115060**: SIP, length: 971
        PUBLISH sip:service-1 at opensipstestorg SIP/20 
        Via: SIP/20/UDP **19216814410:32569**;branch=z9hG4bK-6324-1-0 
        Max-Forwards: 20 
        From: <sip:service-1 at opensipstestorg>;tag=1 
        To: <sip:service-1 at opensipstestorg>
        Call-ID: 1-6324 at 19216814410 
        CSeq: 1 PUBLISH 
        Expires: 3600 
        Event: presence 
        Content-Length:   607 
        User-Agent: Sipp v11-TLS, version 20061124 
<Removed presence xml>

04:34:30118455 IP (tos 0x10, ttl 64, id 28000, offset 0, flags [DF], proto UDP (17), length 417) 
    **102447115060 > 1024424032569**: SIP, length: 389
        SIP/20 200 OK 
        Via: SIP/20/UDP **19216814410:32569**;received=10244240;branch=z9hG4bK-6324-1-0 
        From: <sip:service-1 at opensipstestorg>;tag=1 
        To: <sip:service-1 at opensipstestorg>;tag=6c8cd3bc7eb4fe86b153056f4d236d23-ba2c 
        Call-ID: 1-6324 at 19216814410 
        CSeq: 1 PUBLISH 
        Expires: 3600 
        SIP-ETag: a14509226693820 
        Server: OpenSIPS (184-notls (x86_64/linux)) 
        Content-Length: 0 

As you can see in the dump the IP address where the reply is being sent is the one from which it received the request ie **10244240** while the port is **32569**, which is the actual client port instead it should have been **40351**

Please correct me if I made some wrong observation

Thanks,
Suryaveer

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Reply to this email directly or view it on GitHub:
https://github.com/OpenSIPS/opensips/issues/737
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