[Spce-user] IPv4 address instead of IPv4 in reinvite

[Philipp Rekers]

Hi everyone!

At first I want to say thank you to the sipwise team for this great 
software. We are a small ISP in northwest Germany and I'm evaluating 
sipwise as VOIP server for our customers. So far so good...

I'm experiencing following issue:

- Sipwise mr8.3.1.1
- IPv4 and IPv6
- IPv4 only peer
- IPv6 subscriber (multiple tested, for example Fritzbox or PhonerLite)
- G722 incoming call (with reinvite from peer after answering the call)
- Server IPv4 substituted in this mail with x.x.x.x
- Server IPv6 substituted in this mail with 
xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx

body of the first invite is OK (IPv6 address in o and c is our server IPv6)

v=0
o=- 1483998048 1 IN IP6 xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx
s=xxx
c=IN IP6 xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx
t=0 0
m=audio 31516 RTP/AVP 9 8 101
a=rtpmap:9 G722/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
a=silenceSupp:off - - - -
a=rtcp:31517
a=direction:both

second invite after answering is with wrong body (IPv4 instead of IPv6):

v=0
o=- 0 2 IN IP4 x.x.x.x
s=xxx
c=IN IP4 x.x.x.x
t=0 0
m=audio 31516 RTP/AVP 9 101
a=rtpmap:9 G722/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
a=silenceSupp:off - - - -
a=rtcp:31517
a=ptime:20
a=direction:both

Sipwise sends here the IPv4 server address to the IPv6 subscriber. The 
result is no audio for this call.

Is it my fault???

Thanks & best regards
Philipp