Technical support

> I bought a C6250 modem/ router 4 mths ago [...]

   I see some possibilities:

   1.  You could post a rant, complaining about how Netgear is complying
with its stated support and warranty terms, which, I'd guess, were
disclosed on the box.

   2.  You could pay for Netgear support.

   3.  You could pay for third-party support.

   4.  You could provide a useful problem description in some appropriate
user forum for a C6250, and perhaps get an answer at no additional cost.

      https://community.netgear.com/t5/x/bd-p/home-cable-modems-routers

   5.  You could call a psychic hot-line, and provide no useful
information there, either, and perhaps get lucky.

   There may be others.  You seem to have chosen option 1.

> [...] I'm done buying Netgear crap

   Tell someone who cares?