[TriLUG] More on IPv6 with TWC

[C TC via TriLUG]

That, and "when all else fails, reboot".  :-)
-
Fine words of wisdom. That's exactly why my cable modem
and internal router are on the same power strip ... On/Off = Happy.

On Mon, Aug 31, 2015 at 6:16 PM, Phillip Rhodes via TriLUG <
trilug at trilug.org> wrote:

> So, a couple of weeks ago, I got an IPv6 address from my TWC cable modem
> for the first time, and all was good.  But then I made a change to my TWC
> plan in order to save money and get faster 'net speeds, and somehow in all
> that, they sent me yet another new cable modem.   And this one is the one
> with a built-in router, wireless access point, etc.
>
> OK, piece of cake, right?  I wanted to keep using my Netgear router since I
> already had port forwarding and what-not setup the way I want it.  So I
> went into the admin console for the TWC router and changed the NAT mode to
> "bridged" which basically makes it "just a cable modem" again.   From there
> everything worked fine, until I noticed that I wasn't getting an IPv6
> address handed to the Netgear box anymore. Strange.
>
> A little more probing in the admin console on the TWC box showed that the
> WAN interface still had an IPv6 address.  So, guessing that somehow that
> this box grabbing a v6 address from upstream was interfering with the
> ability of the Netgear to ask for a v6 address, I unclicked the "enable
> IPv6" on the TWC router, and rebooted it.  Still no IPv6 on the Netgear,
> until I rebooted it as well.  Now everything is back to normal.
>
> So, the moral of this story appears to be - IF your TWC cable modem has a
> router built in, and you want to use your own router with IPv6, turn off
> IPv6 on the built-in router.  That, and "when all else fails, reboot".  :-)
>
>
> Phil
> ~~~
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