RE: [2.4 PATCH] bugfix: ARP respond on all devices

David S. Miller wrote:

quoted

	Which nicely sums up the bug, really.

Ok, then how would you propose to be able to send
packets out an interface _before_ we have addresses
assigned to it?

	IP packets you mean? You don't? ;) It would depend on why you're
doing it naturally. Mostly, I'd have thought that if a host doesn't have an
IP number it doesn't get to use ARP.

Linux allows that, and in fact it's a useful feature.

Consider MSG_DONTROUTE as well.

	Irrelevant, ARP should stick to resolving Layer 2 issues, not be
misused as some Layer 3 routeing protocol.

BTW, this ARP source address algorithm we use comes from
ipv6, it would be instructive to go and see why they do
things the way they do.

	If you'd like to give me a reference, I'd be happy to look at the
spec. It doesn't matter where you got the concept from, though - it's
flawed.

		Richard