On Jul 20, 2007, at 3:40 AM, Andr=E9 Wienck wrote:
> Also, I would hardly see any use of broadcasting out all interfaces.
> Most of the time, broadcast to 255.255.255.255 is used for some
> configuration purposes, and thus directed out a specific interface
> (using the bpf interface). For most other stuff that communicates to
> many hosts on many sides, you would rather use some type of broadcast.
>
> Also, we should remember what the rest of the world does in these
> situation.
>
> I think not even Windows screams out on all interfaces...

If you're curious about how other platforms handle IP traffic sent to =20=

the all-1s broadcast address and/or how they deal with sending IP =20
traffic when the network interfaces have not yet been configured (ie, =20=

for DHCP discovery, zeroconf, PPP/PPPoE/PPPoA peer negotiation), it =20
would be helpful to look over this RFC:

    http://www.ietf.org/rfc/rfc3927.txt

...especially "Appendix A - Prior Implementations".

There's also a useful thread here:

    http://lists.freebsd.org/pipermail/freebsd-net/2003-July/=20
thread.html#755

--=20
-Chuck