Following another post about Red Hat 9.0, I added the following lines
to my dhcpd.conf file:

not authoritative;

shared-network WORKSTATIONS {
    subnet 172.16.0.0 netmask 255.255.0.0 {
        ping-check true;
        deny unknown-clients;
    }
}

(The shared-network declaration existed previously, but without
ping-check and deny unknown-clients.)

It now works satisfactorily.  (I didn't actually check exactly which
of these additions is strictly necessary.)

Eric


> > I am unable to boot with dhcp.  The error occurs when dhclient runs
> > (in preparation for the root pivot I assume).  It bombs with this
> > error:
> 
> > ERROR! No root-path!
> 
> > The log on the server shows what looks to me like odd behaviour (see
> > log entries below).  It looks like the client gets the correct ip
> > address the first time, when booting from the network card.  However
> > when the client machine subsequently calls dhclient, it requests a
> > different ip address (172.16.249.254) and is refused.  What's going on
> > here?
> 
> > I'm running Red Hat 9.0.
> 
> > Jun 12 04:34:29 lts1 dhcpd: DHCPDISCOVER from 00:10:5a:12:08:6b via
> > eth0
> > Jun 12 04:34:29 lts1 dhcpd: DHCPOFFER on 172.16.1.8 to
> > 00:10:5a:12:08:6b via eth0
> > Jun 12 04:34:29 lts1 dhcpd: DHCPREQUEST for 172.16.249.254
> > (172.16.0.1) from 00:10:5a:12:08:6b via eth0: lease 172.16.249.254
> > unavailable.
> > Jun 12 04:34:29 lts1 dhcpd: DHCPNAK on 172.16.249.254 to
> > 00:10:5a:12:08:6b via eth0


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