Re: problem with IPoA (CLIP), NAT, and VLANS

On Tue, Feb 17, 2009 at 10:03:57AM +0100, Patrick McHardy wrote:
...

The first patch looks fine. As for the second one, I would like
to understand why we're seing these packets. The VLAN driver uses
the original headroom plus the space it needs itself, which suggests
that the underlying driver specifies an incorrect headroom.
The driver doesn't appear to be part of the mainline kernel though.

On the other hand, if Karl added his patch it seems this change of
NET_SKB_PAD isn't enough, and if omitting skb_cow_head() works, then
the headroom isn't the main problem?

Jarek P.