Timo Teräs wrote:
> Is there newer/better patches to achieve this? Any thoughts about
> doing bridging with gre tunnels?

Here's a patch I did against 2.6.17.

I didn't submit this to mainline though because the userspace ABI
is ugly.  The basic problem is that the struct used for the ioctl
isn't extensible.  The only way I can think of to fix it properly
is to add configuration of gre using netlink, but I never got around
to doing that.