Subject: Re: a remote user can check promiscuous mode
To: Ignatios Souvatzis <>
From: Charles M. Hannum <>
List: tech-net
Date: 12/10/1999 17:16:13
Ignatios Souvatzis <> writes:

> But our IP layer should reject packets with IPv4 unicast addresses, that are
> targeted at link multicast addresses, right? (If I recall

OIC.  No, it doesn't even try to.  Should be easy enough to fix.

I think we *are* supposed to accept broadcast or multicast packets
sent to a link-level unicast address, though.

BTW, it's not actually possible using this hack to remotely
distinguish between promiscuous mode and listening to at least 64
multicast addresses (with ~all commonly available hardware).