[Spce-user] MR4.4.1 and extrange error with NAT

[Sergio Serrano]

Hi all,

	I have installed a SPCE with two peers. This SPCE has LAN
192.168.220.0 with router 192.168.220.1, in this router you can go to
the first PEERS with Public IP of Vodafone and all works fine. It's
said,

192.168.220.20 <->(192.168.220.1)Router(Public IP) <-> Vodafone Peer,
all works fine. 

Connected to that router there is other Class A with a Gateway
SIP/ISDN. When you launch a call from PUblic PSTN and this call arrive
to Gateway and then resend to SPCE, you can see in attachment that 100
TRING is route correctly, but after that message SPCE can't route SIP
MESSAGES. IN logs of kamailio.lb I can see next messages:

NOTICE: <script>: New request on lb - M=INVITE R=sip:951001104 at 192.168.
220.20 F=sip:649976042 at 192.168.220.20 T=sip:951001104 at 192.168.220.20
IP=udp:10.254.254.2:5060 ID=223e28ec6a0afa2e0c32749a75a64be3 at 192.168.22
0.20 UA='Digium Gateway'
Aug 25 14:49:22 voip lb[12532]: NOTICE: <script>: Relaying request,
du='sip:127.0.0.1:5062', fs='udp:127.0.0.1:5060' - R=sip:951001104 at 192.
168.220.20 ID=223e28ec6a0afa2e0c32749a75a64be3 at 192.168.220.20
UA='Digium Gateway'
Aug 25 14:49:22 voip lb[12542]: NOTICE: <script>: Reply from Inbound -
S=100 - Trying M=INVITE IP=udp:127.0.0.1:5062 ID=223e28ec6a0afa2e0c3274
9a75a64be3 at 192.168.220.20 UA='<null>'
Aug 25 14:49:22 voip lb[12542]: NOTICE: <script>: Sending reply,
fs='udp:192.168.220.20:5060' - ID=223e28ec6a0afa2e0c32749a75a64be3 at 192.
168.220.20 UA='<null>'
Aug 25 14:49:23 voip lb[12541]: NOTICE: <script>: New request on lb -
M=INVITE R=sip:VP770000200 at B.B.B.B:5066;user=phone F=sip:649976042 at A.A.
A.A T=sip:VP770000200 at A.A.A.A IP=udp:127.0.0.1:5080 ID=223e28ec6a0afa2e
0c32749a75a64be3 at 192.168.220.20_b2b-1 UA='<null>'
Aug 25 14:49:23 voip lb[12541]: NOTICE: <script>: Relaying request,
du='<null>', fs='udp:192.168.220.20:5060' - R=sip:VP770000200 at B.B.B.B:5
066;user=phone ID=223e28ec6a0afa2e0c32749a75a64be3 at 192.168.220.20_b2b-1 
UA='<null>'
Aug 25 14:49:23 voip lb[12534]: NOTICE: <script>: Reply from Outbound -
S=100 - Trying M=INVITE IP=udp:88.26.250.100:5066 ID=223e28ec6a0afa2e0c
32749a75a64be3 at 192.168.220.20_b2b-1 UA='Grandstream GXP2135 1.0.7.78'
Aug 25 14:49:23 voip lb[12534]: NOTICE: <script>: NATed reply detected
- ID=223e28ec6a0afa2e0c32749a75a64be3 at 192.168.220.20_b2b-1
UA='Grandstream GXP2135 1.0.7.78'
Aug 25 14:49:23 voip lb[12534]: NOTICE: <script>: Sending reply,
fs='udp:127.0.0.1:5060' - ID=223e28ec6a0afa2e0c32749a75a64be3 at 192.168.2
20.20_b2b-1 UA='Grandstream GXP2135 1.0.7.78'
Aug 25 14:49:23 voip lb[12534]: ERROR: <core> [udp_server.c:550]:
udp_send(): sendto(sock,0x7f9453857d20,590,0,88.26.250.100:5080,16):
Invalid argument(22)
Aug 25 14:49:23 voip lb[12534]: CRITICAL: <core> [udp_server.c:555]:
udp_send(): invalid sendtoparameters#012one possible reason is the
server is bound to localhost and#012attempts to send to the net
Aug 25 14:49:23 voip lb[12534]: ERROR: <core> [forward.h:201]:
msg_send_buffer(): udp_send failed
Aug 25 14:49:23 voip lb[12533]: NOTICE: <script>: Reply from Outbound -
S=180 - Ringing M=INVITE IP=udp:B.B.B.B:5066 ID=223e28ec6a0afa2e0c32749
a75a64be3 at 192.168.220.20_b2b-1 UA='Grandstream GXP2135 1.0.7.78'
Aug 25 14:49:23 voip lb[12533]: NOTICE: <script>: NATed reply detected
- ID=223e28ec6a0afa2e0c32749a75a64be3 at 192.168.220.20_b2b-1
UA='Grandstream GXP2135 1.0.7.78'
Aug 25 14:49:23 voip lb[12533]: NOTICE: <script>: Sending reply,
fs='udp:127.0.0.1:5060' - ID=223e28ec6a0afa2e0c32749a75a64be3 at 192.168.2
20.20_b2b-1 UA='Grandstream GXP2135 1.0.7.78'
Aug 25 14:49:23 voip lb[12533]: ERROR: <core> [udp_server.c:550]:
udp_send(): sendto(sock,0x7f94538539c0,955,0,B.B.B.B:5080,16): Invalid
argument(22)
Aug 25 14:49:23 voip lb[12533]: CRITICAL: <core> [udp_server.c:555]:
udp_send(): invalid sendtoparameters#012one possible reason is the
server is bound to localhost and#012attempts to send to the net
Aug 25 14:49:23 voip lb[12533]: ERROR: <core> [forward.h:201]:
msg_send_buffer(): udp_send failed 

When LB answer INVITE is work, but after that, once the INVITE is
passed to proxy and return LB can't route message.

Any one can help me with this?

Regards,

Sergio
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