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      [email protected]         
[email protected]
contact-uri :                        [email protected]    
[email protected] 

2 Test sequence and the tcpdump file can be seen in 
                        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)

3 openser-1.3.4-12 configuration file can be seen in openser.cfg attachment. 
I have added the following block into the openser.cfg
"
modparam("registrar", "default_expires", 3600)
modparam("registrar", "min_expires", 60)
"

--------------------------------------
Regards!
Hu xiaoqiang
Quality Assurance Engineer
IRC Account:xhu Channel:#apac #apac-qa

Attachment: SIP Registrar- Expiration of REGISTER request less than a registrar-configured minimum.pcap
Description: Binary data

Attachment: openser.cfg
Description: Binary data

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