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Date: Fri, 27 Jan 2017 00:15:24 +0000 (UTC)
From: "rashmidixit (JIRA)" <jira@apache.org>
To: cloudstack-issues@incubator.apache.org
Message-ID: <JIRA.12960631.1461223851000.9036.1485476124502@Atlassian.JIRA>
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Subject: [jira] [Commented] (CLOUDSTACK-9359) Return ip6address in Basic
 Networking
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archived-at: Fri, 27 Jan 2017 00:15:32 -0000


    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15840737#comment-15840737 ] 

rashmidixit commented on CLOUDSTACK-9359:
-----------------------------------------

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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