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https://issues.apache.org/jira/browse/CLOUDSTACK-452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13588954#comment-13588954
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ASF subversion and git services commented on CLOUDSTACK-452:
------------------------------------------------------------

Commit 74ef848788c3065448ff1a019b3f17d885ff57c8 in branch refs/heads/4.1 from 
Jessica Wang <jessicaw...@apache.org>
[ https://git-wip-us.apache.org/repos/asf?p=incubator-cloudstack.git;h=74ef848 ]

CLOUDSTACK-452: cloudstack UI - Infrastructure menu - zone detail - physical 
network - create guest network - add IPv6 Gateway, IPv6 CIDR, IPv6 Start IP, 
IPv6 End IP field.

                
> IPv6 support
> ------------
>
>                 Key: CLOUDSTACK-452
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-452
>             Project: CloudStack
>          Issue Type: New Feature
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>            Reporter: Wido den Hollander
>            Assignee: Sheng Yang
>             Fix For: Future
>
>
> This is quite a large feature, but we are lacking complete IPv6 support at 
> this moment.
>  
> We should support IPv6 for: 
> - The Management server itself 
> - Communication with the Hypervisors 
> - Communication with the System VMs 
> Those three are probably the easiest work, we also need to support IPv6 for 
> instances.
>  
> In both the Advanced and Basic zone Instances should be able to get a non-NAT 
> true and native IPv6 address.
>  
> We should also not limit them to having one IP, they should be able to get 
> multiple IPv6 addresses.
>  
> In the basic zone it can be done pretty easily by having the Virtual Router 
> also hand out IPv6 over DHCPv6 and have your router in the network handle the 
> gateway work.
>  
> In the advanced zone it becomes more difficult. 
> One way could be that the network admin creates a static route for a /48 
> towards a Virtual Router and then the VR can hand out /64s to Instances.
>  
> But static routing can become a problem, so you might want to use OSPF, LISP 
> or even iBGP for getting those prefixes to the VR.
>  
> This is a big feature, but I think the Basic zone is the easiest for now. 
> In the Advanced Zone you COULD keep everything behind the VR IPv4 and have 
> the VR do IPv6 loadbalancing, but that would still not be true IPv6 
> connectivity.
>  
> NAT in the VR seems like a firewall, but a true statefull firewall in the VR 
> could do the same while the Instances still have publicly routeable IPv6 
> addresses.
>  
> There is no functional spec on this yet, but we have to keep this in mind 
> that we need IPv6 support. People are running out of IPv4 space. 

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