** Also affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1320029
Title:
GRE segmentation issue drops packets over 1438 bytes long
Status in OpenStack Neutron (virtual network service):
New
Status in Ubuntu:
New
Bug description:
OpenStack Icehouse release running on ubuntu 14.04 using GRE tunnels,
packets over 1438 bytes long are dropped and not segmented. This
causes many issues, not least of which is you cannot inject an ssh key
into an ubuntu 14.04 guest using the metadata service.
I have attached tcpdump to the tap interface, the br-int bridge, the
br-tun bridge, and I can see a small packet traverse the path all the
way to the physical interface leaving the compute node. When I
attempt to send a packet of 1439 bytes, it enters the br-int bridge,
but never leaves.
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