[TriLUG] Residential IPv4 address stability, etc. (AT&T vs. Google Fiber)

[Alan Porter via TriLUG]

> Just leaving this here in case anyone else runs into this that's on a
> Spectrum account (sadly, it's currently the only non-satellite option
> in my neighborhood): if you're having problems with your Spectrum
> connection, check your modem model number.
> ...
> If you check the model number on the bottom of the modem, you can
> tell which one you have. The ES2251 and EN2251 are the ones based on
> the Puma chipset, while the ET2251 and EU2251 models use Broadcom
> chips.


I had a problem that sounds a whole lot like this.  Mine was on an 
Arris
modem, and my IPv4 was OK, but my IPv6 would run for 4.5 minutes and 
then
stop.  It was maddening.  They replaced my modem with a new Arris 
SB6183,
and it still had the problem.

My "solution" was to run a cron job every two minutes that did `dhcpcd 
-N`
to renew DHCPv6 addresses.  That worked, and I ran it that way for 
several
months.

Somewhere along the line, we got a new Spectrum EU2251 modem with the
"good" chipset.

I am so glad to hear that it's not just me that these mysterious
hard-to-troubleshoot symptoms.

Alan