[186511] in North American Network Operators' Group
Re: Nat
daemon@ATHENA.MIT.EDU (Mark Andrews)
Sun Dec 20 22:42:57 2015
X-Original-To: nanog@nanog.org
To: "Chuck Church" <chuckchurch@gmail.com>
From: Mark Andrews <marka@isc.org>
In-reply-to: Your message of "Sun, 20 Dec 2015 21:23:04 -0500."
<00e801d13b96$873e1120$95ba3360$@gmail.com>
Date: Mon, 21 Dec 2015 14:40:50 +1100
Cc: 'North American Network Operators' Group' <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
In message <00e801d13b96$873e1120$95ba3360$@gmail.com>, "Chuck Church" writes:
> -----Original Message-----
> From: Mark Andrews [mailto:marka@isc.org]
> Sent: Thursday, December 17, 2015 7:46 PM
> To: Chuck Church <chuckchurch@gmail.com>
> Cc: 'Matthew Petach' <mpetach@netflight.com>; 'North American Network
> Operators' Group' <nanog@nanog.org>
> Subject: Re: Nat
>
>
> >I have a single CPE router and 3 /64's in use. One for each of the
> wireless SSID's and one for the wired network. This is the default for
> homenet devices. A single /64 means you >have to bridge all the traffic.
>
> >A single /64 has never been enough and it is time to grind that myth into
> the ground. ISP's that say a single /64 is enough are clueless.
>
> Mark,
>
> I agree that a /48 or /56 being reserved for business
> customers/sites is reasonable. But for residential use, I'm having a hard
> time believing multi-subnet home networks are even remotely common outside
> of networking folk such as the NANOG members. A lot of recent IPv4 devices
> such as smart TVs have the ability to auto-discover things they can talk to
> on the network. If we start segmenting our home networks to keep toasters
> from talking to thermostats, doesn't this end up meaning your average home
> user will need to be proficient in writing FW rules? Bridging an entire
> house network isn't that bad.
So *you* think the ISPs should *dictate* how a user internally
splits up their network? There is NO technical reason to NOT give
a customer multiple subnets. Every technology supports multiple
prefixes. Even with 6rd you *can* give the user multiple subnets.
It's only lazyness (or purchasing incompetence if the BR doesn't
support multiple domains) that results in ISP's handing out single
subnets over 6rd.
> Chuck
>
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka@isc.org
