INVITE sip:user@[2001:db8::10] SIP/2.0
To: sip:user@[2001:db8::10]
From: sip:user@example.com;tag=81x2
Via: SIP/2.0/UDP [2001:db8::9:1];branch=z9hG4bKas3-111
Call-ID: SSG9559905523997077@hlau_4100
Contact: "Caller" <sip:caller@[2001:db8::9:1]>
Max-Forwards: 70
CSeq: 8912 INVITE
Content-Type: application/sdp
Content-Length: 181

v=0
o=bob 280744730 28977631 IN IP4 host.example.com
s=
t=0 0
m=audio 22334 RTP/AVP 0
c=IN IP4 192.0.2.1
m=video 6024 RTP/AVP 107
c=IN IP6 2001:db8::1
a=rtpmap:107 H263-1998/90000
