On Thu, Jun 30, 2011 at 1:29 PM, Ben Pfaff <[email protected]> wrote: > 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]>
Pushed, thanks. _______________________________________________ dev mailing list [email protected] http://openvswitch.org/mailman/listinfo/dev
