Re: 2.0 ethX bogus packet size messages ...
Alan Cox (alan@cymru.net)
Fri, 14 Jun 1996 14:41:38 +0100 (BST)
> [[ Note that as an undocumented feature, most 8390 clone NICs can
> actually Tx and Rx giant packets up to 4k in size! Don't try this
> on anything other than a "home-net" or somebody is likely to come
> after you with an axe and blood in their eyes. Besides, it doesn't
> gain you much -- see the Boggs paper on measured capaicty of ethernet
> for a good read of packet size vs # of hosts vs network loading. ]]
Also note correct oversized packets dumped onto a network break certain
well known vendors 8390 based drivers.
> Alan, I think the following patch (to use your dev->change_mtu) to keep
> ether users honest, is probably a good idea.
We could do, but to be honest I dont think we should stop people. Its not
possible to make a computer luserproof. This is something only root can do
and its far less fatal than rm -rf /, which is allowed
Alan