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From "ASF subversion and git services (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-9853) IPv6 Prefix Delegation support in Basic Networking
Date Wed, 22 Nov 2017 12:01:00 GMT


ASF subversion and git services commented on CLOUDSTACK-9853:

Commit 632479d8f8e25d442c09e54f78dbda1c468ca3b6 in cloudstack's branch refs/heads/master from
[;h=632479d ]

CLOUDSTACK-9853: Add support for Secondary IPv6 Addresses and Subnets (#2028)

This commit adds support for passing IPv6 Addresses and/or Subnets as
Secondary IPs.

This is groundwork for CLOUDSTACK-9853 where IPv6 Subnets have to be
allowed in the Security Groups of Instances to we can add DHCPv6
Prefix Delegation.

Use ; instead of : for separating addresses, otherwise it would cause
problems with IPv6 Addresses.

Signed-off-by: Wido den Hollander <>

> IPv6 Prefix Delegation support in Basic Networking
> --------------------------------------------------
>                 Key: CLOUDSTACK-9853
>                 URL:
>             Project: CloudStack
>          Issue Type: New Feature
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: KVM, Management Server
>            Reporter: Wido den Hollander
>            Assignee: Wido den Hollander
>              Labels: basic-networking, dhcp, dhcpv6, ipv6, virtual-router
> In addition to have a single IPv6 address (/128) Instances in Basic Networking should
be able to have a IPv6 subnet, like a /60 for example routed to them.
> The mechanism for this is DHCPv6 Prefix Delegation. A DHCPv6 server can tell the Instance
which subnet is routed to it.
> On the physical router a (static) route needs to be configured to do this. So in Basic
Networking it will be up to the network admin to make sure the routes are present.
> The Management Server will pick a subnet for a Instance when needed and configure the
VR with the proper DHCPv6 arguments so that the right answer is provided to the Instance.
> For example when running containers it is very nice to have a subnet routed to your Instance
so you can give each container a unique IPv6 address.

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