DHCPCD Problems with Cox's new network

Wed, 30 Jan 2002 20:39:35 -0700

I gotta say, I have had a lot fewer issues with COX sence I have switched to running my own name service (bind) rather than using theirs. I was noticing very bad response times from their DNS servers over time.

Now, I admit this has nothing to do with DHCP, but it needed to be said. :)

Bob.

On Wed, 30 Jan 2002 20:11:28 -0700
Digital Wokan <wokan@cox.net> wrote:

> I did it through my Linux gateway as well.  That's probably why I'm able
> to respond today (after having absolutely *NO* connectivity yesterday). 
> This whole Cox.net switchover is the perfect proof why we need to be
> able to choose our ISP.
> 
> Technomage wrote:
> > 
> > what this windows box connected to the cable modem directly?
> > 
> > I did the same thing from a windows box INSIDE my natted network here and
> > didn't have this problem (the ip was grabed as soon as the change-over hit)
> > 
> > perhaps this is why I was able to get a new ip with a linux box (it was the
> > gateway).
> > 
> > Technomage
> > 
> > On Tuesday 29 January 2002 09:40, you wrote:
> > > I think maybe I can verify that.  I did the conversion with my windows
> > > box, which in restrospect was a bad idea.  since Then i have not been able
> > > to get my firewall to grab an IP.  I can put it in statically and pass
> > > traffic.  When I use pump and watch the logs this is what I see right
> > > before a timeout:
> > >
> > > xid: 0x63aabbdf4a rejected <-> 0x64aabbddcf
> > >
> > > My suspicion is that this is their dhcp server rejecting my request on
> > > what I can only assume is the MAC address of my NIC.  although I cannot
> > > find any decent documentation.
> > >
> > > On 28 Jan 2002, Craig White wrote:
> > > >On Mon, 2002-01-28 at 10:32, Jeffrey Pyne wrote:
> > > >> I've been having trouble, as well.  I thought I had it all figured out,
> > > >> but apparently not.  I did spend almost 2 hours on hold Saturday morning
> > > >> (listening to Tori Amos or Enya or whomever-- I requested AT LEAST two
> > > >> songs for the hold music, and the tech support guy replied that many
> > > >> other people had requested the same thing).
> > > >>
> > > >> Anyway, I found something interesting:  I had been having trouble
> > > >> getting a DHCP lease for the past week.  Sometimes I would not get a
> > > >> DHCP_ACK from their server.  Other times I would get one and I would get
> > > >> my old @Home IP address, but then I wouldn't be able to ping my default
> > > >> gateway or connect to anything on the Internet.  When I finally spoke to
> > > >> someone Saturday, I told him that I was getting an IP address of
> > > >> 24.x.y.z, but that I couldn't connect to anything on the Internet.  He
> > > >> said, "Hmmmm, that's an @Home address; you should be getting an IP
> > > >> address that starts with 68." Interesting.  He wanted me to look at my
> > > >> "Workgroup" setting, so I quickly connected my Win98 box to my cable
> > > >> modem and reconfigured it and rebooted. He had me change the Workgroup
> > > >> to "@COX.NET" and reboot.  But while I was futzing around with this, he
> > > >> said a supervisor had just told him that their "provisioning server" was
> > > >> down and that I would not be able to get an IP address from DHCP until
> > > >> it was back up (oh, and there was no E.T.A.).  After I expressed my
> > > >> displeasure and hung up, I tried rebooting the Win98 box just for fun.
> > > >> When I did, I immediately got an IP address and could connect to
> > > >> resources on the Internet.  Bizarre.  I connected my firewall back up
> > > >> and ran 'dhclient ne0' and I got my old IP address again (even after
> > > >> deleting /var/lib/dhcp.leases, which is an OpenBSD thing)).  I tried
> > > >> manually assigning the values I received on my Windows box to my
> > > >> firewall, and then I could connect.  So are they using some DHCP server
> > > >> that only hands out IP addresses for computers in the same "Workgroup?"
> > > >> If so, what about Macs (which they support)?  I'm confused....
> > > >>
> > > >> Also, a guy at work said that he was told this weekend that the old
> > > >> LANCity modems don't work with the new network (or rather, they work,
> > > >> but only intermittently).  (And indeed, http://status.cox.net/view.asp
> > > >> shows that this is an issue.)  My co-worker is trading in his modem at a
> > > >> Cox office today.  I have a LANCity modem, too.  I think I'll trade it
> > > >> in just for the hell of it.  What kind of modem do you have?
> > > >>
> > > >> ~Frustrated in Phoenix
> > > >
> > > >----------
> > > >I thought that someone mentioned that the new cox setup changes from a
> > > >hostname authentication to a mac address authentication to get dhcp
> > > >service. This would suggest that in the conversion process, the first
> > > >assignment with your cxXXXXXXX-x hostname captured the mac address of
> > > >your network interface and locked it down. Thus switching to another NIC
> > > >(computer/router device) would mean that it can't capture an ip address
> > > >unless you call customer support and they release it.
> > > >
> > > >If this is true, and I haven't verified it, this would make it a bad
> > > >idea to use a windows computer to get the ip address from the dhcp
> > > >server and then switching it out for a linux box.
> > > >
> > > >Craig
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