At 11:31 AM 10/22/2006, Christos Zoulas wrote:
>In article <200610220450.k9M4ocx4008811@rockhead.com>,
>Paul Newhouse  <newhouse@rockhead.com> wrote:
> >
> > christos@astron.com (Christos Zoulas) wrote:
> >
> >>  In article <200610220317.k9M3HLuR004127@bigbox.wan.vpn>,
> >>  Paul Newhouse  <newhouse@rockhead.com> wrote:
> >>  >My old cable modem seized up and died a while back and
> >>  >Comcast replace it with an RC DCM425c.  I hooked it up
> >>  >to an XP system (doctor says I'll recover after a while ;)
> >>  >and entered the account number and got the thing configured
> >>  >... I think?
> >>  >
> >>  >Then I did the same thing I used to do with the old modem:
> >>  >I powered if off and connected it to my NetBSD system (3.0.1).
> >>  >When I run dhclient <cable interface> it doesn't get connected.
> >>  >I can run tcpdump -i <cable interface> and see lots of arp traffic
> >>  >going by so I think the equipment is working but, I keep getting
> >>  >this in /var/log/messages:
> >>  >
> >>  >Oct 21 18:27:42 bigbox dhclient: No working leases in persistent
> >>  >database - sleeping.
> >>  >...
> >>  >Oct 21 18:35:59 bigbox dhclient: No DHCPOFFERS received.
> >>  >Oct 21 18:35:59 bigbox dhclient: No working leases in persistent
> >>  >database - sleeping.
> >>  >
> >>  >
> >>  >ifconfig of <cable interface> shows:
> >>  >
> >>  >: ifconfig tlp1
> >>  >tlp1:
> >>  >flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> mtu
> >>  >1500
> >>  >        address: 00:a0:cc:3a:d9:52
> >>  >        media: Ethernet autoselect (100baseTX full-duplex)
> >>  >        status: active
> >>  >        inet 0.0.0.0 netmask 0xff000000 broadcast 255.255.255.255
> >>  >        inet6 fe80::2a0:ccff:fe3a:d952%tlp1 prefixlen 64 scopeid 0x3
> >>  >
> >>  >I have a DSL line that should be my default route but, I changed the
> >>  >default to 0.0.0.0 and started up dhclient.  It still doesn't want to
> >>  >connect.
> >>  >
> >>  >Can anybody tell me where I'm going wrong with this??
> >>
> >>  try tcpdump -vv -s 1500 -i tlp1 port bootpc or port bootps

Our local cable company registers the MAC address of the first device 
connected to the cable modem. If you then connect another machine you 
need to call the cable company and have them register the new MAC 
address. Maybe they registered the MAC address of the XP system?
Michael Thompson