<--- Received SIP request (1179 bytes) from UDP:10.30.100.41:5060 --->
REGISTER sip:domain.tld;transport=TLS SIP/2.0
Via: SIP/2.0/UDP 10.30.100.41;branch=z9hG4bK3d29.be3b9f28282d22cb1d2bb806974711c3.0;i=8
Via: SIP/2.0/TLS client_pub_ip:37202;received=client_pub_ip;branch=z9hG4bK-d8754z-d45989b5365ab896-1---d8754z-;rport=38298
Max-Forwards: 69
Contact: <sip:8422-10@client_pub_ip:37202;rinstance=fa726aaccd3eb11b;transport=TLS>
To: "User2"<sip:8422-10@domain.tld;transport=TLS>
From: "User2"<sip:8422-10@domain.tld;transport=TLS>;tag=bf424b65
Call-ID: ODI1MGJiZjUwMDBjMTM2MWRjODIwMzFiN2I5ZjVjZWM.
CSeq: 2 REGISTER
Expires: 3600
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri
User-Agent: Z 3.3.25608 r25552
Authorization: Digest username="8422-10",realm="asterisk",nonce="1512012228/d351088c646b2e0fa101baab2862bae5",uri="sip:domain.tld;transport=TLS",response="5eae6a839134f49ef641061702d5be67",cnonce="0cb3fb1e4848eebde7938a4a79e28fff",nc=00000001,qop=auth,algorithm=md5,opaque="160bcdcf4534033e"
Allow-Events: presence, kpml
Content-Length: 0
Path: <sip:10.30.100.41;lr;received=sip:client_pub_ip:38298%3Btransport%3Dtls>


<--- Transmitting SIP response (537 bytes) to UDP:10.30.100.41:5060 --->
SIP/2.0 420 Bad Extension
Via: SIP/2.0/UDP 10.30.100.41;rport=5060;received=10.30.100.41;branch=z9hG4bK3d29.be3b9f28282d22cb1d2bb806974711c3.0;i=8
Via: SIP/2.0/TLS client_pub_ip:37202;rport=38298;received=client_pub_ip;branch=z9hG4bK-d8754z-d45989b5365ab896-1---d8754z-
Call-ID: ODI1MGJiZjUwMDBjMTM2MWRjODIwMzFiN2I5ZjVjZWM.
From: "User2" <sip:8422-10@domain.tld>;tag=bf424b65
To: "User2" <sip:8422-10@domain.tld>;tag=z9hG4bK3d29.be3b9f28282d22cb1d2bb806974711c3.0
CSeq: 2 REGISTER
Server: Asterisk PBX 14.6.0
Content-Length:  0


[Nov 29 22:23:48] WARNING[20988]: res_pjsip_registrar.c:353 register_aor_core: Invalid modifications made to REGISTER request from '8422-10' by intervening proxy