Trace from cilent: ============================================================================================================= 10:26:36.424197 IP6 2004::90:82.sip > 2004::90:81.sip: SIP, length: 354 `....j.@ ............... ....................jx.REGISTER sip:[2004::90:81] SIP/2.0 Via: SIP/2.0/UDP [2004::90:82]:5060;branch=z9hG4bK1206866792 From: sip:2002@[2004::90]:81;tag=1806361594 To: sip:2002@[2004::90]:81 Call-ID: 1308861798@2004::90:82 CSeq: 1 REGISTER Contact: sip:2002@[2004::90:82]:5060 Max-Forwards: 70 User-Agent: Linphone-1.7.1/eXosip Expires: 200 Content-Length: 0
10:26:36.424605 IP6 2004::90:81.sip > 2004::90:82.sip: SIP, length: 451 `......@ ............... .....................v.SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP [2004::90:82]:5060;branch=z9hG4bK1206866792;received=2004:0:0:0:0:0:90:82 From: sip:2002@[2004::90]:81;tag=1806361594 To: sip:2002@[2004::90]:81;tag=9bf42f041e5ea2673c94775a0faadb8b.8e04 Call-ID: 1308861798@2004::90:82 CSeq: 1 REGISTER WWW-Authenticate: Digest realm="[2004::90:81]", nonce="4886a61885ddea6cfa1c3e538e26b3ceffab04bf" Server: OpenSER (1.3.2-notls (i386/linux)) Content-Length: 0
17:26:52.618229 IP6 2004::90:82 > 2004::90:81: ICMP6, destination unreachable, unreachable address 2004::90:82, length 507 `.....:@ ............... .................Im....`......@ ............... .......................SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP [2004::90:82]:5060;branch=z9hG4bK1206866792;received=2004:0:0:0:0:0:90:82 From: sip:2002@[2004::90]:81;tag=1806361594 To: sip:2002@[2004::90]:81;tag=9bf42f041e5ea2673c94775a0faadb8b.8e04 Call-ID: 1308861798@2004::90:82 CSeq: 1 REGISTER WWW-Authenticate: Digest realm="[2004::90:81]", nonce="4886a60c2e9e478a8c8591a61c5ca117814ea990" Server: OpenSER (1.3.2-notls (i386/linux)) Content-Length: 0 ======================================================================================================== after receiving "401" challenge, the client just can't find the server. why would this happen? it works very well on the ipv4.
please help me...