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[Bug 1270646] Re: PMTUd / DF broken in GRE tunnel configuration

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Armando Migliaccio <1270646@xxxxxxxxxxxxxxxxxx>
Date: Wed, 13 Jul 2016 02:23:07 -0000
Reply-to: Bug 1270646 <1270646@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** No longer affects: neutron

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https://bugs.launchpad.net/bugs/1270646

Title:
  PMTUd / DF broken in GRE tunnel configuration

Status in tripleo:
  Fix Released

Bug description:
  PMTUd / DF is broken in our GRE tunnel configuration - slow network
  performance with ovs 1.10.2, pulled the MTU on the VM down to 1440 and
  10MB/s from LA to the UK.

  Thats with both the 1.10.2 dkms package from Ubuntu and the 3.11
  kernel datapath

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