Re: 2.1.75 breaks dhcpcd

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 25 Dec 1997 21:28:42 +0000 (GMT)

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> > do bad things if something else sends packets to 0.0.0.0 (if you've ever
> > seen mixed dhcp and old old sun boxes with 0.0.0.0 as broadcast on a lan
> > you'd get the picture)
> >
> > Alan
>
> And what of RFC 951 ?
> RFC 951 September 1985

It says you may transmit as 0.0.0.0 for those special cases but nowhere
does it say you should respond to normal traffic on that address. Thats
what dhcpcd causes in its current mode of operation.

DHCPD needs to use SOCK_PACKET. Now that we have the BPF filter on
SOCK_PACKET this can be done very cleanly

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