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Date:      Tue, 15 Mar 2016 16:56:14 -0700
From:      Matt Mullins <mokomull@gmail.com>
To:        Guy Harrison <gfh@swampdog.co.uk>
Cc:        FreeBSD <freebsd-questions@freebsd.org>
Subject:   Re: dhcpd, iscsi and a raspberry pi
Message-ID:  <CAPyT1SFNRJ0BaEW3aWA54GySVLvQp3Wxv6ei+gTaKDi4M=oLJA@mail.gmail.com>
In-Reply-To: <201603152316.33023.gfh@swampdog.co.uk>
References:  <201603151632.14124.gfh@swampdog.co.uk> <44egbbiewf.fsf@be-well.ilk.org> <4437rrjreh.fsf@lowell-desk.lan> <201603152316.33023.gfh@swampdog.co.uk>

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On Tue, Mar 15, 2016 at 4:16 PM, Guy Harrison <gfh@swampdog.co.uk> wrote:
> On Tuesday 15 March 2016 22:41:10 Lowell Gilbert wrote:
> > Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> writes:
> > > I thought dhcpd would use MAC address if the client didn't provide
> > > anything else. I'll check if I get a chance.
> >
> > Confirmed. My dual-boot machine has no special settings in the server's
> > dhcp.conf, and gets the same address regardless of which OS it's using.
> > It even offers a different hostname on each OS.
>
> Cheers. It's beginning to look like it's the lack of client information from
> the first (initrd *.53) dhcp request that may be the cause. If that's the
> case then I can rule out..
>
> ..and go figure out what how..
>
> uid "\001\270'\353\0172d";

uid is the cause.  DUID was added to dhcpv4 in RFC 4361, and a dhcpd
that understands the option will treat different DUIDs as separate
devices even if they have the same MAC address.

You might want to remove "send dhcp-client-identifier = hardware;"
from your /etc/dhcp/dhclient.conf (or equivalent) on your Raspberry
Pi.



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