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[Anand Shanmugam <anand1712@xxxxxxxxx>]

** Changed in: nova
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1457971

Title:
  Bad MAC address format in Allowed Address Pairs brings down
  openvswitch agent

Status in OpenStack Neutron (virtual network service):
  In Progress
Status in OpenStack Compute (Nova):
  Invalid

Bug description:
  Problem Statement: 
  I am trying to attach Allowed Address Pairs on a neutron port which is attached to an instance. When the format of the MAC address is not as expected, the OpenvSwitch agent throws an error saying "[req-b1607450-7cd9-4284-ac1a-0850900a0a90 None] Error while processing VIF ports" and no further instances can be created on that Compute Node. 

  Steps to Reproduce: 
  1. Create a CentOS/Cirros instance on a compute node. 

  2. Note down the ID of the port attached to the instance.

  3. Run the command: neutron port-update <id> --allowed-address-pairs
  type=dict list=true mac_address=cc3e-
  5f81-1234,ip_address=192.168.100.0/24

  4. Note the format of the MAC here. (it should ideally be:
  cc:3e:5f:81:12:34

  5. Now create a new instance on the same compute node.

  6. The instance does not get created.

  It looks like the API is not performing a check of the format which is
  causing this issue.

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