[OpenSIPS-Users] SIPv6 UA can't receive a 423 (Interval Too Brief) response from openser-1.3.4-12.fc13.i686 SIPv6 Registrar Server when expiration of a REGISTER request is less than a registrar-configured minimum

[Xiaoqiang Hu]

Hi all,
SIPv6 UA can't receive a 423 (Interval Too Brief) response from openser-1.3.4-12.fc13.i686 SIPv6 Registrar Server when expiration of a REGISTER request is less than a registrar-configured minimum.The details can be seen as follows. Is it a bug or can be resolved by modifying configuration file?  
1 Test topology:

                   NUT(REG && PX)             UA11                       UA12                           DNS
                        |                      |                          |                              |
IP          : 3ffe:501:ffff:50::50   3ffe:501:ffff:1::1          3ffe:501:ffff:2::2                3ffe:501:ffff:4::1
aor-uri     : ss.under.test.com      UA11 at under.test.com         UA12 at under.test.com
contact-uri :                        UA11 at node.under.test.com    UA12 at node11.under.test.com 

2 Test results can be seen as follows: 
                        NUT  UA11 UA12 UA13 UA14 PX2  PX3  PX4  DNS
 No     time             |    |    |    |    |    |    |    |    |
 No     time             |    |    |    |    |    |    |    |    |
[0001:  0.00|U   ] REGIS |<---|    |    |    |    |    |    |    | REGISTER sip:ss.under.test.com:5060
[0002:  0.00|U   ] 401   |--->|    |    |    |    |    |    |    | 401 Unauthorized (REGISTER)
[0003:  0.08|U   ] REGIS |<---|    |    |    |    |    |    |    | REGISTER sip:ss.under.test.com:5060
[0004:  0.08|U   ] 200   |--->|    |    |    |    |    |    |    | 200 OK (REGISTER)

0001: <UA11	 REGISTER sip:ss.under.test.com:5060 SIP/2.0
Via: SIP/2.0/UDP node.under.test.com:5060;branch=z9hG4bKPUA9361264
Max-Forwards: 70
From: UA11 <sip:UA11 at under.test.com>;tag=11164
To: UA11 <sip:UA11 at under.test.com>
Call-ID: 11164 at eye.example.com
CSeq: 1 REGISTER
Contact: <sip:UA11 at node.under.test.com;transport=udp>
Content-Length: 0
Expires: 30

0002: >UA11	 SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP node.under.test.com:5060;branch=z9hG4bKPUA9361264;received=3FFE:501:FFFF:1:0:0:0:1
From: UA11 <sip:UA11 at under.test.com>;tag=11164
To: UA11 <sip:UA11 at under.test.com>;tag=0c0d2af89845c72ddfdc7de2133116df.fbda
Call-ID: 11164 at eye.example.com
CSeq: 1 REGISTER
WWW-Authenticate: Digest realm="under.test.com", nonce="4c147cbdaa78f4207bc41ac16dce0b8e2ab32dec", qop="auth"
Server: OpenSER (1.3.4-tls (i386/linux))
Content-Length: 0

0003: <UA11	 REGISTER sip:ss.under.test.com:5060 SIP/2.0
Via: SIP/2.0/UDP node.under.test.com:5060;branch=z9hG4bKPUA9361265
Max-Forwards: 70
Authorization: Digest username="UA11", realm="under.test.com", qop=auth, nonce="4c147cbdaa78f4207bc41ac16dce0b8e2ab32dec", opaque="", nc=00000001, cnonce="6f54a149", uri="sip:ss.under.test.com:5060", response="3f61013fa1bb9d330c9117c73c27e05a"
From: UA11 <sip:UA11 at under.test.com>;tag=11164
To: UA11 <sip:UA11 at under.test.com>
Call-ID: 11164 at eye.example.com
CSeq: 2 REGISTER
Contact: <sip:UA11 at node.under.test.com;transport=udp>
Content-Length: 0
Expires: 30

0004: >UA11	 SIP/2.0 200 OK
Via: SIP/2.0/UDP node.under.test.com:5060;branch=z9hG4bKPUA9361265;received=3FFE:501:FFFF:1:0:0:0:1
From: UA11 <sip:UA11 at under.test.com>;tag=11164
To: UA11 <sip:UA11 at under.test.com>;tag=0c0d2af89845c72ddfdc7de2133116df.63cb
Call-ID: 11164 at eye.example.com
CSeq: 2 REGISTER
Date: Sun, 13 Jun 2010 06:32:49 GMT
Contact: <sip:UA11 at node.under.test.com;transport=udp>;expires=660
Server: OpenSER (1.3.4-tls (i386/linux))
Content-Length: 0

3 I have added the following block into the openser.cfg
"
modparam("registrar", "default_expires", 3600)
modparam("registrar", "min_expires", 60)
"

--------------------------------------
Regards!
Hu xiaoqiang
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