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https://issues.apache.org/jira/browse/CLOUDSTACK-9359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15840737#comment-15840737
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rashmidixit commented on CLOUDSTACK-9359:
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Github user asfgit closed the pull request at:
https://github.com/apache/cloudstack/pull/1700
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> 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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