message which results in funny call-flows -- I need to review when I am awake

test/bye_chris.sip

@@ -0,0 +1,14 @@
+BYE sip:[email protected] SIP/2.0
+Max-Forwards: 10
+Record-Route: <sip:[email protected];ftag=as38468f70;lr=on>
+Via: SIP/2.0/UDP 192.246.69.223;branch=z9hG4bK1ac2.64b19ee4.0
+Via: SIP/2.0/UDP 65.39.205.112:5028;branch=z9hG4bK28091bb9
+Route: <sip:[email protected];r2=on;ftag=e495220a31344eb39a6bf44ee3b01303;lr=on>,<sip:[email protected];transport=tcp;r2=on;ftag=e495220a31344eb39a6bf44ee3b01303;lr=on>
+From: <sip:[email protected]>;tag=as38468f70
+To: "[email protected]" <sip:[email protected]>;tag=e495220a31344eb39a6bf44ee3b01303;epid=f15c896fef
+Contact: <sip:[email protected]:5028>
+Call-ID: [email protected]
+CSeq: 102 BYE
+User-Agent: Asterisk PBX
+Content-Length: 0
+