MAC address range should be specified until 4th octet

[Nachi Ueno]

We can specify upper three bit of MAC address by this review.
https://review.openstack.org/#/c/8996/
However MAC address range should be fully specified

[Gary Kotton (garyk)]

The current implementation enables the user to create a base mac address - for example AA:BB:CC:00:00:00. This means that MAC addresses will be assigned in the range AA:BB:CC:00:00:00 to AA:BB:CC:7F:FF:FF.
In short the user is able to define the prefix for the MAC addresses.
Can you please elaborate on the bug.

[Nachi Ueno (nati-ueno)]

Hi Gary
Thank you for your comment

We wanna avoid collision of MAC in case we are using multiple nova cluster.
It is hard to get new OUI for each cluster, so more than OUI bit should be specified.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/10759

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/10759
Committed: http://github.com/openstack/quantum/commit/36f1f15cfbd93ca528f6c006c5b035f79126339c
Submitter: Jenkins
Branch: master

commit 36f1f15cfbd93ca528f6c006c5b035f79126339c
Author: Nachi Ueno <email address hidden>
Date: Fri Aug 3 01:37:34 2012 +0000

    Make 4th octet of mac_range configurable.

    Fix bug 1022739.
    To get OUI per cluster is not realistic. So This commit
    make 4th octet of mac_range configurable. By this commit,
    the cloud provider can allocate OUI (3 octets) + 1 extra octet
    range (4 octets) for each cluster.

    Change-Id: Ibbd27e6e7f16d73dfd3045ed60f63a38b23ea1ed