Hello, 

I was wondering if there was a resolution to this.  I am running into the same 
thing.  It seem to be very dependent on the SIP Client that I use and how they 
interact with each other.


Thanks,
Pat Burke


HI Michele,

Could you provide (off list) a pcap for the scenario, pointing also the which 
SIP msg is generating the log you mentioned ?

Regards,

Bogdan-Andrei Iancu OpenSIPS Founder and 
Developerhttp://www.opensips-solutions.com
On 02/08/2017 11:38 AM, Michele Pinassi wrote:


Hi all,

i'm going crazy with an issue with WiFi VoIP users. Our VoIP server, Opensips 
1.11.9, was inside DMZ with public IP address 193.x.x.110 and WiFi network is 
10.x.x.x. VoIP fixed phone are inside a separated network 172.20.x.x and 
firewall allowed traffic in both directions between those nets.

When i call from a fixed phone (172.20.1.90, as example) to a client connected 
to WiFi network (ex. 10.101.8.71) it works perfectly. But, on other side, SIP 
signalling fail on a PRACK sent to 193.x.x.110 instead of 10.101.8.71, printing 
out "WARNING:rr:after_strict:no socket found for match second RR" error.

5004 was the CALLED user, 5009 the calling one, on WiFi network (10.10.1.22):

/usr/sbin/opensips[29845]: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub - Route RELAY 
INVITE To: 5004, From: 5009, RURI: sip:5004@172.20.1.33:45802
/usr/sbin/opensips[29845]: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub - Route NEW BRANCH 
To: 5004, From: 5009, RURI: sip:5004@172.20.1.33:45802
/usr/sbin/opensips[29844]: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub - Route RELAY PRACK 
To: 5004, From: 5009, RURI: sip:193.x.x.110;lr;
/usr/sbin/opensips[29849]: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub - Route MISSED CALL 
INVITE To: 5004, From: 5009, RURI: sip:5004@172.20.1.33:45802
/usr/sbin/opensips[29845]: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub - Route RELAY ACK 
To: 5004, From: 5009, RURI: sip:voip.xxxx.it;transport=udp;lr



Oh the 5009 phone i did a tcpdump where i saw:

SIP/2.0 489 Bad Event

v: SIP/2.0/UDP 
10.0.8.1:34209;rport=53951;received=10.101.8.71;branch=z9hG4bKPjDD2mDOwI11dIEIX-FY-72lpXL2jS9Qvz

Record-Route: x.x.110;lr;ftag=V41fxeL-v5HuRwE4rUnVN-XRVBTsVal3>

i: 6znDCyifz4jVTBUDMGe07e2UQrdr2qCl

f: xxx.it>;tag=V41fxeL-v5HuRwE4rUnVN-XRVBTsVal3

t: xxx.it>;tag=1eC1ckc8ts5OH4mJhMwZ-RgHxEFUgMJw

CSeq: 27800 SUBSCRIBE

l: Â 0


PRACK sip:5004@193.x.x.110:26892 SIP/2.0

v: SIP/2.0/UDP 
10.0.8.1:34209;rport;branch=z9hG4bKPjghFr0FmAkMHZhWMcfUtl1mUxj-IdkyQg

Max-Forwards: 70

f: xxx.it>;tag=KgJWD-2L-MlmTD0FyxgXhlnUeIIOhYbM

t: xxx.it>;tag=aewrc0nu91

i: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub

CSeq: 13112 PRACK

Route: x.x.110;lr;ftag=KgJWD-2L-MlmTD0FyxgXhlnUeIIOhYbM;did=b8.6fcc5694>

RAck: 1 13111 INVITE

l: Â 0


SIP/2.0 404 Not here

v: SIP/2.0/UDP 
10.0.8.1:34209;received=10.101.8.71;rport=53951;branch=z9hG4bKPjghFr0FmAkMHZhWMcfUtl1mUxj-IdkyQg

f: xxx.it>;tag=KgJWD-2L-MlmTD0FyxgXhlnUeIIOhYbM

t: xxx.it>;tag=aewrc0nu91

i: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub

CSeq: 13112 PRACK

Server: VoIP

Content-Length: 0

Any hints how to solve this issue ?

Thanks, Michele

--



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