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https://issues.apache.org/jira/browse/CLOUDSTACK-9359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15591132#comment-15591132
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ASF GitHub Bot commented on CLOUDSTACK-9359:
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Github user wido commented on the issue:
https://github.com/apache/cloudstack/pull/1700
@rhtyd Thanks! I've updated and squashed the commits. Commit message now
also shows more information.
Feedback is welcome! Currently working on the Security Grouping for IPv6.
Will send each bit in as different, small, Pull Requests.
> Return ip6address in Basic Networking
> -------------------------------------
>
> Key: CLOUDSTACK-9359
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9359
> Project: CloudStack
> Issue Type: Sub-task
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: API, Management Server
> Environment: CloudStack Basic Networking
> Reporter: Wido den Hollander
> Assignee: Wido den Hollander
> Labels: api, basic-networking, ipv6
> Fix For: Future
>
>
> In Basic Networking Instances will obtain their IPv6 address using SLAAC
> (Stateless Autoconfiguration) as described in the Wiki:
> https://cwiki.apache.org/confluence/display/CLOUDSTACK/IPv6+in+Basic+Networking
> When a ip6cidr is configured and is a /64 we can calculate the IPv6 address
> an Instance will obtain.
> There is no need to store a IPv6 address in the database with the /64 subnet
> (ip6cidr) and the MAC address we can calculate the address using EUI-64:
> "A 64-bit interface identifier is most commonly derived from its 48-bit MAC
> address. A MAC address 00:0C:29:0C:47:D5 is turned into a 64-bit EUI-64 by
> inserting FF:FE in the middle: 00:0C:29:FF:FE:0C:47:D5. When this EUI-64 is
> used to form an IPv6 address it is modified:[1] the meaning of the
> Universal/Local bit (the 7th most significant bit of the EUI-64, starting
> from 1) is inverted, so that a 1 now means Universal. To create an IPv6
> address with the network prefix 2001:db8:1:2::/64 it yields the address
> 2001:db8:1:2:020c:29ff:fe0c:47d5 (with the underlined U/L (=Universal/Local)
> bit inverted to a 1, because the MAC address is universally unique)."
> The API should return this address in the ip6address field for a NIC in Basic
> Networking.
> End-Users can use this, but it can also be used internally by Security
> Grouping to program rules.
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