[SR-Users] NAT ping replies

[Klaus Darilion]

On 10/29/2010 11:55 AM, Sergey Okhapkin wrote:
> Kamailio 3.1 log is filled with lines like
>
> Oct 29 03:32:46 west /usr/local/sbin/kamailio[632]: INFO:<script>: incoming
> reply from udp:188.62.4.186:65333 SIP/2.0 404 Not Found  Via: SIP/2.0/UDP
> 204.74.213.5:5060;branch=0  From:<sip:pinger at sip.callwithus.com>;tag=3993f0c
> To:<sip:188.62.4.186:65333>   Call-ID: aff32da5-89ef0136-71dc8c5 at 204.74.213.5
> CSeq: 1 OPTIONS  Content-Length: 0
> Oct 29 03:32:46 west /usr/local/sbin/kamailio[632]: INFO:<core>
> [forward.c:774]: broken reply to forward - no 2nd via
>
> Shouldn't replies to NAT ping messages be silently dropped like in 1.4?

Yes. But probably kamailio fails to detect that it is a response to a 
keep-alive request. Maybe the client is buggy and the message is 
malformed. Trace the requests (wireshark or ngrep, tcpdump) and compare 
response and request - maybe there is a malformed header in the response.

regards
klaus