[clue-tech] DNS lookups take a looooooong time SOLVED!

[Brian Gibson]

The reason that is the case is that Comcast assigns a dynamic IP address based on a MAC address.  This is most likely to prevent people from stealing the service.  One of the benefits is that if your neighborhood isn't saturated with subscribers, for all intents and purposes, you get a static IP address.

So unless you tell the technician to register your router's MAC address during
installation, the tech, or more specifically, the software used, will register
your computer's NIC instead.  I think this is how the self-installation kit works, too.  The technician knows a backdoor for registering the MAC address so you don't have to deal with the branded Comcast software.

Router firmware allows you to spoof a MAC address to get around this limitation.  Of course you can always make a phone call and they can re-register the MAC for you.

----- Original Message ----
From: "katanacb at comcast.net" <katanacb at comcast.net>
To: CLUE tech <clue-tech at cluedenver.org>
Sent: Tuesday, April 3, 2007 4:15:47 PM
Subject: [clue-tech] DNS lookups take a looooooong time SOLVED!

I just thought I'd pass this along in case anyone else runs into the same problem.

I got my DNS lookup problem solved this afternoon ..... I came home a little early and decided to poke around inside the router's setup and configuration before I boxed the thing up and tried to do an exchange at MicroCenter.  In going through the setup, I noticed that there was a little checkbox that said I could either use a router's mac address, my computer's mac address, or a specific MAC address (on the internet side of the router).....

Just for giggles, I un-checked 'use the router one' and checked 'use the computer one' ... bounced both the router and the cable modem and ZOOOOOOOOOOOOM things resolve as they should.   *Does the happy dance in his office chair*  Just to make sure this wasn't a freak thing, I changed it back to 'use the router one', bounced both the router and the cable modem and DNS lookups indeed took 10-20 seconds as I was seeing before.

So, if any of you have a similar problem with this router, try making that change and see if it helps you.

Now ... off to upgrade from Dapper 64-bit  to Feisty 64-bit     :)

-Chris
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