On Wed, 2014-11-12 at 10:12 +0900, Greg Kroah-Hartman wrote: > 3.17-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Ben Hutchings <[email protected]> > > [ Upstream commit 3d0ad09412ffe00c9afa201d01effdb6023d09b4 ] > > IPv6 does not allow fragmentation by routers, so there is no > fragmentation ID in the fixed header. UFO for IPv6 requires the ID to > be passed separately, but there is no provision for this in the virtio > net protocol. > > Until recently our software implementation of UFO/IPv6 generated a new > ID, but this was a bug. Now we will use ID=0 for any UFO/IPv6 packet > passed through a tap, which is even worse. > > Unfortunately there is no distinction between UFO/IPv4 and v6 > features, so disable UFO on taps and virtio_net completely until we > have a proper solution. [...]
Please drop this patch for 3.14 and 3.17. It causes problems for
migration of VMs and we're probably going to revert part of this. The
following patch ("drivers/net, ipv6: Select IPv6 fragment idents for
virtio UFO packets") might no longer apply, in which case you can drop
that as well until we have this sorted out upstream.
Ben.
--
Ben Hutchings
Experience is directly proportional to the value of equipment destroyed.
- Carolyn Scheppner
signature.asc
Description: This is a digitally signed message part
