BYE sip:user@host.example.net SIP/2.0
Via: SIP/2.0/UDP [2001:db8::9:1]:6050;branch=z9hG4bKas3-111
Via: SIP/2.0/UDP 192.0.2.1;branch=z9hG4bKjhja8781hjuaij65144
Via: SIP/2.0/TCP [2001:db8::9:255];branch=z9hG4bK451jj;received=192.0.2.200
Call-ID: 997077@lau_4100
Max-Forwards: 70
CSeq: 89187 BYE
To: sip:user@example.net;tag=9817--94
From: sip:user@example.com;tag=81x2
Content-Length: 0

