Losing IP address from cable modem in bridge mode every two weeks

ElaineM,

Thanks for the link.  I understand MAC spoofing now because of the troubles in getting this router to run continuously.

Please understand what I am saying:

1) The initial configuration is clunky because I restarted the cable modem BEFORE trying to configure the router and it failed to get an initial IP address.  I then restarted the router again and then it got its IP address.  I didn't do the second restart until two days ago and that is when it finally got its IP address with its OWN MAC address.

2) Before two days ago, for the last couple months since purchased as guided by your telephone support, the router was using a PC's MAC address that was able to easily obtain an IP address with only one cable modem restart, not two.  Using that MAC address during initial configuration would get the router to get an IP address and work.  It would only work until a future DHCP renew attempt.  Here is where I am guessing on the problem:  Either the DHCP server has a problem renewing the lease (not sure on this because it is Comcast and they have millions of customers...but maybe it is because it is Comcast...), or the Nighthawk is not making the renew request correctly (maybe using its own MAC address when it should use the spoof).

The router successfully renewed it DHCP lease last night on time (half time renew).

I have a working system now and I know how to make it work if I ever need to factory reset again but I have seen posts with similar problems here and elsewhere without solutions.  I think it bears investigation.

Anyway, when the Nighthawk works, it is great.  Great range and great speeds.  I am very happy with the product, except for the challenges to get it to finally work consistently.

I will have to call the Customer Care line a third time as I still have not received the replacement router.  I think the problem is solved now anyway, so we will see if they can cancel that.

Thanks for your help.

MarcG1