On Wed, Sep 23, 1998 at 06:12:08PM +0000, Matthias Scheler wrote:
> In article <19980923120333.A16345@noc.untraceable.net>,
> 	Andrew Brown <twofsonet@graffiti.com> writes:
> > so...(feeling a little foolish) does this accomplish anything that
> > couldn't be done using tun0 and a suitable userspace daemon?
> 
> There are two problems with this approach:
> 
> a) How should a user space daemon send out encapsulated packets?
> b) The performance would suck.

a) Using BPF ;-)
b) actually, a commercial portable PPP stack uses that approach, and is
   rumoured to be pretty performant on then-up-to-date Sparc machines.

But yes, its probably not wise to try if you have the source to your OS
kernel.
	-is