Incorrectly defined MAC of network card which is located in admin network

Additional info, nodes 1 and 7 went to offline.

I think it could be caused by this patch
https://github.com/stackforge/fuel-web/commit/807ecd7b3ced2ba5d0a5b8cc4c1eaceca9990f75

In db we have node with mac a2:61:15:7d:b4:43
But we don't have interface with this mac in interface list from node
http://paste.openstack.org/show/61669/

And then the same node sends data with mac 08:00:27:27:8A:55
http://paste.openstack.org/show/61670/
Nailgun's response is '403 Forbidden'

So, we have non-persistent alghorithm of admin interface definition.

During the deployment while the L23network Puppet module is reconfiguring node's interfaces this instant configuration can occur:
  * Public interface (br-ex) has been configured,
  * admin interface (e.g. eth0) goes down,
  * Nailgun agent has collected info with broken IP and MAC fields and is trying to reach Master node
  * the packets go to the default route (br-ex) and come to the host node of our virtual test environment
  * the packets go through the NAT on the host node and return to the Master node via PXE net with the source IP of the host node
  * all information of the node has updated successfully.

After that has happened the admin interface brings up and next agent's message is fine, but Nailgun can't determine which node should be updated. The problem lines are https://github.com/stackforge/fuel-web/blob/master/nailgun/nailgun/api/validators/node.py#L130-L145 It can be fixed with something like http://paste.openstack.org/show/61935/ with according fixes in validate_update method.

Also we must discuss the future of using MACs as unique node ids.

We have merged patch by Bogdan recently.
https://github.com/stackforge/fuel-web/commit/a641e5dcadd474d1dc6404b17adc8bd3ed66067c
Which provide us uuid of node, we should use this uuid to determine uniqueness of node instead of mac.

Reviewed: https://review.openstack.org/72700
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=de6c0a6e1e14919430323e1cc93cb13e3f1ec954
Submitter: Jenkins
Branch: master

commit de6c0a6e1e14919430323e1cc93cb13e3f1ec954
Author: Aleksey Kasatkin <email address hidden>
Date: Tue Feb 11 18:43:30 2014 +0200

    Check all node's MACs against MACs of all NICs of nodes

    All MACs of node being added/updated are checked against MACs of all NICs of each existing node.
    Tests are added.
    It's a quick fix. Usage of uuid to determine uniqueness of node will be considered.

    Closes-Bug: #1271505

    Change-Id: If9e8ac82ff9aa1c8359591821e70d4394a5a24ae

Verified on ISO #116
"build_id": "2014-02-13_13-09-40",
"mirantis": "no",
"build_number": "116",
"nailgun_sha": "0653f2e052cad099686de0e8259d4b861577599e",
"ostf_sha": "f86abe5544b5ffcf621e0c450bca15737c92361f",
"fuelmain_sha": "a4f314699aa97a274513a5ee182b13d25bf137ed",
"astute_sha": "7eed50fc30cec675fff7787c37fcf6da6dd518ee",
"release": "4.1",
"fuellib_sha": "dc45bb0b8520a91a66fd0493a87b4cf4bd33c32c"