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[Amrita Mande <amande@xxxxxxxxxxx>]

Public bug reported:

An instance newly created, cannot access network (in and out); cannot be
sshed into neither can be pinged. Only console works!

Analysis:
-------------
the instance cannot be pinged from the network node, but the network node can ping the DNS by itself.

[A] Ping from an outside server to the instance: 
After listening on to the interface that the instance is associated on (tap-interface) on that node, we can see that the interface does receive the packets sent in. but it doesn't transmit the packets from their on to the instance itself.

Solution:
-------------
"service neutron-openvswitch-agent restart"  doesn't resolve the problem and the instance' network start working, only for sometime, until the bug kicks in.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1312942

Title:
  the tap interface created on network node - doesn't accept packets

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  An instance newly created, cannot access network (in and out); cannot
  be sshed into neither can be pinged. Only console works!

  Analysis:
  -------------
  the instance cannot be pinged from the network node, but the network node can ping the DNS by itself.

  [A] Ping from an outside server to the instance: 
  After listening on to the interface that the instance is associated on (tap-interface) on that node, we can see that the interface does receive the packets sent in. but it doesn't transmit the packets from their on to the instance itself.

  Solution:
  -------------
  "service neutron-openvswitch-agent restart"  doesn't resolve the problem and the instance' network start working, only for sometime, until the bug kicks in.

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