Problems connecting to a Google Nest

> Xfinity works fine with Netgear. [...]

   Do you mean the corporations, or some devices, or what?  Define
"works fine"?

> [...] In talking with google support, the problem seems to be that
> netgear does not assign an IP address for the nest to use. [...]

   "seems"?  "netgear", the corporation, does not "assign an IP address"
to anything.

   A cable-TV modem, like the CM1150V, is only a modem, and does not
"assign an IP address" to anything.  It's supposed to provide a
communication path between the ISP and device (like a computer or a
router), and then the ISP should provide an IP address for _that_
device.

> [...] Any suggestions on getting the nest to work with this?

   Start your own, new thread for your own, different problem, rather
than hiding in this months-old, dead-end thread.

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual (at least).  Read.  Look for the
LED descriptions and "Troubleshoot".

   When you start your own thread, include some useful information, like
actual LED behavior, actual IP addresses, and so on.  In other words,
more than "doesn't work" and anyone's analysis of what "seems" to be the
cause.