On Tue, 12 Oct 1999, David Evans wrote:
> For sure.  This is obvious but it also *has* to allow efficient
> prepending and removal of headers.  Messages between the layers
> saying, "here's a packet for you" just wouldn't work, since prepending
> stuff would require copying.

Maybe I'm missing something but isn't this what mbufs are for?

-- 
| Matthew N. Dodd  | '78 Datsun 280Z | '75 Volvo 164E | FreeBSD/NetBSD  |
| winter@jurai.net |       2 x '84 Volvo 245DL        | ix86,sparc,pmax |
| http://www.jurai.net/~winter | This Space For Rent  | ISO8802.5 4ever |