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I had to replace my Arris cable modem and the store gave me an ET2251. I connected it FIRST to one of my home laptops as a test and it was able to pull the IP address (modem came up in bridge mode like the last one which I want) and get online. However when I swung the cable to my home router which is where it NEEDS to be to run my network, my router couldn't get the address via DHCP. I put the cable back into the laptop and it can get the address and get out. So I swung the cable to another of my network devices (Netgear WAP) and it also couldn't get the address via DHCP. Again back to the laptop and it works. This sounds like some kind of device cache stored somewhere in the Spectrum network. Resetting/rebooting the ET2251 doesn't help. I called and got a tech dispatch setup but in the meantime is this something known with a fix? This new modem otherwise works fine, speeds are correct, voice works...it simply will only allow my laptop to get the address and connect, no other devices.