yahoo-eng-team team mailing list archive

[Slawek Kaplonski <1906318@xxxxxxxxxxxxxxxxxx>]

After longer thinking about it we think that network's mtu should be 4
bytes smaller than physnet's mtu in case when transparent vlan is
enabled for network. I will continue work on that improvement.

** Changed in: neutron
       Status: Invalid => Confirmed

** Changed in: neutron
   Importance: Medium => Wishlist

** Tags added: mtu

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https://bugs.launchpad.net/bugs/1906318

Title:
  MTU for networks with enabled vlan transparency should be 4 bytes
  lower

Status in neutron:
  Confirmed

Bug description:
  For networks when VLAN transparency is enabled, mtu value returned by get_mtu should be lower by 4 bytes to make space for that additional vlan tag which is added by the VM.
  The problem here is that get_mtu() method in the type drivers currently only gets physical_network as parameter so there is no way to check if network has or hasn't got vlan_transparency enabled.

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