[172549] in North American Network Operators' Group
Re: Ars Technica on IPv4 exhaustion
daemon@ATHENA.MIT.EDU (Owen DeLong)
Mon Jun 23 01:11:40 2014
X-Original-To: nanog@nanog.org
From: Owen DeLong <owen@delong.com>
In-Reply-To: <32F1C1EB-E35B-4BD0-A727-12C8C220A4EB@heliacal.net>
Date: Sun, 22 Jun 2014 22:04:09 -0700
To: Laszlo Hanyecz <laszlo@heliacal.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
On Jun 22, 2014, at 20:41 , Laszlo Hanyecz <laszlo@heliacal.net> wrote:
>=20
> On Jun 23, 2014, at 3:32 AM, "Kalnozols, Andris" <andris@hpl.hp.com> =
wrote:
>=20
>>=20
>> On 6/22/2014 7:41 PM, Frank Bulk wrote:
>>> Did they ever explain why? Did the SMC function as a router, and =
act as the
>>> customer side of a stub network that allowed that /29 to hang off =
the
>>> router? If that was the case, and the Motorola D3 modem was =
L2-only, that
>>> might explain the change in capability.=20
>>=20
>=20
> The Comcast business SMC gateway speaks RIP to make the routed /29 =
work.. in theory it could be put into bridge mode and you can do the RIP =
yourself but they don't support that configuration (you'd need the key =
to configure it successfully and they didn't want to do when I asked). =
If you poke around in the web UI, it does support IPv6 in some form, but =
it doesn't seem to be active for me.
>=20
> If you don't have a static IP block from them and thus don't have the =
need to use RIP you can just use a regular DOCSIS 3 cable modem and get =
IPv6, but you only get one IPv4 number that way.
In my experience, if you put a switch behind the modem (not a router), =
you can get as many IPv4 numbers as you have devices attached to the =
switch on Business Class. On residential, you're limited to one, but I =
have gotten multiples on business class.
Owen
