On Wed, Mar 2, 2011 at 4:49 PM, Ben Pfaff <b...@nicira.com> wrote:
> We've noticed that packets that go up to userspace and then back down to
> the kernel and then enter an GRE tunnel that is then ESP encapsulated
> by IPSEC end up with a bad ESP "next header" value: it ends up as zero
> instead of 0x2f (IPPROTO_GRE).  I'm still investigating but in the
> meantime the "big hammer" of just putting packets from userspace into
> a freshly allocated skb fixes the problem.
>
> Signed-off-by: Ben Pfaff <b...@nicira.com>
> Bug #4769.

It doesn't seem like we're likely to find out the real cause of this
problem any time soon and since this at least avoids the problem it
probably makes sense to push it.

Acked-by: Jesse Gross <je...@nicira.com>
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