On Thu, Jun 30, 2011 at 01:09:46PM -0700, Jesse Gross wrote: > By default we set the DF bit on tunneled packets because we want to > get path MTU discovery from the underlying network. In turn this > causes Linux to leave the IP ID as 0 because it believes that > fragmentation can never occur. However, with GRE fragmentation is > still possible because we may get a large packet to be encapsulated > and let the local IP stack do fragmentation. As long as packets are > kept in order fragments are not misassociated and everything works fine. > However, if there is reordering in the underlying network then packets > can become corrupted. This forces selection of an IP ID for GRE packets > to avoid misassociation. > > Bug #6128 > > Signed-off-by: Jesse Gross <[email protected]>
Acked-by: Ben Pfaff <[email protected]> _______________________________________________ dev mailing list [email protected] http://openvswitch.org/mailman/listinfo/dev
