[SR-Users] Problem with Kamailio 4.2.0

[José Antonio Gutiérrez Delgado]

Hi,

I'm using Kamailio 4.2.0 and I'm developing a SIP-based application.
Today I made a test connecting two devices directly to an S7 sharing the
Internet, I usually use a VPN even if they are both connected to the same
network because in the future they will be in different networks.Without
the VPN calls were not received.
This has never happened to me, I have repeated tests and in an S6 it has
also happened to me.
So I have checked my Kamailio server and I have detected that when
executing: kamctl ul show,
the received field did not appear:

With VPN:

 Contact:: sip:pruebaT at 47.60.42.40:10924;transport=udp Q=
                        Expires:: 1992
                        Callid:: iwNoYb~QR-
                        Cseq:: 21
                        User-agent:: Unknown (belle-sip/1.6.1)
                        Received:: sip:47.60.42.40:10924
                        State:: CS_NEW
                        Flags:: 0
                        Cflag:: 64
                        Socket:: udp:10.0.0.4:5060
                        Methods:: 4294967295
                        Ruid:: uloc-5a9d9097-9fa-431c
                        Instance::
<urn:uuid:8b50dde3-d07f-4752-9a24-7b8ddf219a99>
                        Reg-Id:: 0
                        Last-Keepalive:: 1539614732
                        Last-Modified:: 1539614732


Without VPN:

Contact:: sip:pruebaT at 37.10.156.189:51163;transport=udp Q=
                        Expires:: 1996
                        Callid:: webjvHycBs
                        Cseq:: 21
                        User-agent:: Unknown (belle-sip/1.6.1)
                        State:: CS_NEW
                        Flags:: 0
                        Cflag:: 0
                        Socket:: udp:10.0.0.4:5060
                        Methods:: 4294967295
                        Ruid:: uloc-5a9d9097-9fc-1feb
                        Instance::
<urn:uuid:89306a81-e2d1-4b7a-8206-107e3cbc0688>
                        Reg-Id:: 0
                        Last-Keepalive:: 1539614531
                        Last-Modified:: 1539614531

Would someone know why it happened? Thanks

-- 
José Antonio Gutiérrez Delgado
Responsable técnico
Oficina: (+34) 923040031
<http://www.arsoft-company.com/>
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