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https://issues.apache.org/jira/browse/CLOUDSTACK-9317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15501167#comment-15501167
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ASF GitHub Bot commented on CLOUDSTACK-9317:
--------------------------------------------

Github user jburwell commented on the issue:

    https://github.com/apache/cloudstack/pull/1623
  
    @ProjectMoon I am extending the date for 4.8 to 25 Sept 2016.  Therefore, 
if we can get the test failure fixed, we can get it into 4.8.2.0, 4.9.1.0, and 
4.10.0.0.  Also, could you please investigate the Travis and Jenkins build 
failures?


> Disabling static NAT on many IPs can leave wrong IPs on the router
> ------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-9317
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9317
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: Management Server, Virtual Router
>    Affects Versions: 4.7.0, 4.7.1, 4.7.2
>            Reporter: Jeff Hair
>
> The current behavior of enabling or disabling static NAT will call the apply 
> IP associations method in the management server. The method is not 
> thread-safe. If it's called from multiple threads, each thread will load up 
> the list of public IPs in different states (add or revoke)--correct for the 
> thread, but not correct overall. Depending on execution order on the virtual 
> router, the router can end up with public IPs assigned to it that are not 
> supposed to be on it anymore. When another account acquires the same IP, this 
> of course leads to network problems.
> The problem has been in CS since at least 4.2, and likely affects all 
> recently released versions. Affected version is set to 4.7.x because that's 
> what we verified against.



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