[asterisk-bugs] [Asterisk 0011201]: Problem when using NAT and Subscriptions

[noreply at bugs.digium.com]

The following issue has been RESOLVED. 
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http://bugs.digium.com/view.php?id=11201 
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Reported By:                brainy
Assigned To:                qwell
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Project:                    Asterisk
Issue ID:                   11201
Category:                   Channels/chan_sip/Subscriptions
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     resolved
Asterisk Version:           1.4.13  
SVN Branch (only for SVN checkouts, not tarball releases): N/A  
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
Resolution:                 duplicate
Duplicate:                  11200
Fixed in Version:           
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Date Submitted:             11-08-2007 16:39 CST
Last Modified:              11-08-2007 16:43 CST
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Summary:                    Problem when using NAT and Subscriptions
Description: 
Scenario: Several Snom IP Phones behind a NAT Gateway (no Portforwards
exist).

Everything is working fine but then a NOTIFY goes out from Asterisk to a
Phone, the Phone sends back the ACK (the ACK is definititly seen by
Asterisk) it does not recognize it as the right ACK packet. Thats resulting
in Retransmission of already sent and received Packets.

Tests were made with Asterisk 1.4.13 In the Additional Info you can see:
Retransmission http://bugs.digium.com/view.php?id=3, then the ACK packet but
after that, there's
Retransmission http://bugs.digium.com/view.php?id=4 because it didnt recognize
the ACK successfully.
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Relationships       ID      Summary
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duplicate of        0011200 Problem when using NAT and Subscriptions
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Issue History 
Date Modified   Username       Field                    Change               
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11-08-07 16:43  qwell          Relationship added       duplicate of 0011200
11-08-07 16:43  qwell          Duplicate ID             0 => 11200          
11-08-07 16:43  qwell          Status                   new => resolved     
11-08-07 16:43  qwell          Resolution               open => duplicate   
11-08-07 16:43  qwell          Assigned To               => qwell           
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