[Bug 997978] Re: KVM images lose connectivity with bridged network

[andrew bezella]

i believe that we're seeing the same problem with ganeti-managed kvm
instances running on 12.04 utilizing a bridged network.

in an initial deployment of 8 guests (also 12.04) we had half of them
drop off the network within a few hours.  there is a weak correlation
between high network load in the guests and the network dropping.  in
some but not all cases from the kvm instance's console i was able to
ifdown/ifup its interface and bring it back online.

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https://bugs.launchpad.net/bugs/997978

Title:
  KVM images lose connectivity with bridged network

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