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https://issues.apache.org/jira/browse/CLOUDSTACK-9500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15502037#comment-15502037
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John Burwell commented on CLOUDSTACK-9500:
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[~muralireddy] is this ticket a duplicate of [#CLOUDSTACK-9493]?
> VR configuration not clean properly after Public IP release
> -----------------------------------------------------------
>
> Key: CLOUDSTACK-9500
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9500
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Virtual Router
> Affects Versions: 4.7.0, 4.9.0
> Reporter: Pierre-Luc Dion
>
> On a VPC, releasing a public IP that had Port Forwarding does not remove
> configuration of the public IP on the VR configs
> ({{/etc/cloudstack/forwardingrules.json}}, {{/etc/cloudstack/ips.json}})
> So, when this IP is reassign to another VPC, it cause arp table issues on
> switches, because 2 MAC try to own this IP from 2 different VRs. the IP on
> the old VR is not pignable but the switches arp table get updated every time
> the previous VR have configuration changes.
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