nanog mailing list archives
Re: Looking for an IPv6 naysayer...
From: "Ricky Beam" <jfbeam () gmail com>
Date: Thu, 10 Feb 2011 00:10:52 -0500
On Wed, 09 Feb 2011 18:47:34 -0500, George Bonser <gbonser () seven com> wrote:
In other words, the broadband provider provides a single global IP to the "always up" CPE. That CPE does DHCP to user stations and hands out 1918 addresses and NATs them to the single global IP.
Correct. The distinction you seem unware of (or unwilling to accept) is that the ISP did not assign you a private address. Your CPE did. The ISP gave you a single public IPv4 address. With the notable exception of Uverse, you can put that address on any device you want. But you only have the one public address, so you'll have to resort to NAT inside your network to support more than one machine. (DSL and cable modems can be set to pure bridged mode, thus turning off their routing/NAT engine. You cannot do that with Uverse due to their authentication method.)
This is *very* different from the ISP doing the NAT... one device doing NAT for thousands of customers, vs. a device in the customer's hands doing the NAT.
I have yet to see a broadband provider that configures a network so that individual nodes in the home network get global IPs.
Open your eyes. Many cable networks will sell you access to more than one address -- TW (RR) has done this for over a decade. AT&T Uverse will provide a /29 for free.
--Ricky
Current thread:
- Re: Looking for an IPv6 naysayer..., (continued)
- Re: Looking for an IPv6 naysayer... Matthew Kaufman (Feb 09)
- Re: Looking for an IPv6 naysayer... Jack Bates (Feb 09)
- Re: Looking for an IPv6 naysayer... Owen DeLong (Feb 09)
- Re: Looking for an IPv6 naysayer... Daniel Roesen (Feb 10)
- Re: Looking for an IPv6 naysayer... Jim Gettys (Feb 09)
- Re: Looking for an IPv6 naysayer... Mark Andrews (Feb 09)
- Re: Looking for an IPv6 naysayer... Fred Richards (Feb 09)
- Re: Looking for an IPv6 naysayer... George Herbert (Feb 10)
- Re: Looking for an IPv6 naysayer... Ken A (Feb 10)
- RE: Looking for an IPv6 naysayer... Nathan Eisenberg (Feb 09)
- Re: Looking for an IPv6 naysayer... Ricky Beam (Feb 09)
- RE: Looking for an IPv6 naysayer... George Bonser (Feb 09)
- Re: Looking for an IPv6 naysayer... Jens Link (Feb 10)
- Re: Looking for an IPv6 naysayer... Jeroen van Aart (Feb 10)
- Re: Looking for an IPv6 naysayer... Adam Atkinson (Feb 12)
- RE: Looking for an IPv6 naysayer... George Bonser (Feb 12)
- Re: Looking for an IPv6 naysayer... Valdis . Kletnieks (Feb 12)
- Re: Looking for an IPv6 naysayer... Joel Jaeggli (Feb 09)
- Re: Looking for an IPv6 naysayer... TR Shaw (Feb 09)
- Re: Looking for an IPv6 naysayer... Jeroen van Aart (Feb 10)
- Re: Looking for an IPv6 naysayer... Mark Andrews (Feb 09)