BYE sip:[2001:db8::10] SIP/2.0
To: sip:user@example.com;tag=bd76ya
From: sip:user@example.com;tag=81x2
Via: SIP/2.0/UDP [2001:db8::9:1];received=[2001:db8::9:255];branch=z9hG4bKas3-111
Call-ID: SSG9559905523997077@hlau_4100
Max-Forwards: 70
CSeq: 321 BYE
Content-Length: 0

