nanog mailing list archives
Re: Looking for an IPv6 naysayer...
From: Jack Bates <jbates () brightok net>
Date: Thu, 10 Feb 2011 10:18:39 -0600
On 2/10/2011 10:05 AM, Benson Schliesser wrote:
DS-lite *uses* IPv6 connectivity, it doesn't provide it. That's like saying 6rd or 6to4 "guarantees you have IPv4 connectivity".
Who in their right mind would feed IPv6 to a CPE, deploy a CPE that supports DS-Lite, and NOT give out prefixes?
In terms of CGN44 versus NAT444, I'd like to see evidence of something that breaks in NAT444 but not CGN44. People seem to have a gut expectation that this is the case, and I'm open to the possibility. But testing aimed at demonstrating that breakage hasn't been very scientific, as discussed in the URLs I posted with my previous message.
To even determine your public IP address, you must ask someone on the other side of the NAT, this applies also when you are doing udp hole punches. So what happens when you try and talk to you neighbor? Who's going to tell you what you need to know between your NAT and the providers NAT? This is one way that NAT444 breaks more than NAT44 (even in LSN configurations)
And yes, I find that neighbors do like to play with one another, and most LSNs don't support hair pinning translations between customers (most NAT in general won't support that).
Jack
Current thread:
- Re: Looking for an IPv6 naysayer..., (continued)
- Re: Looking for an IPv6 naysayer... Iljitsch van Beijnum (Feb 09)
- Re: Looking for an IPv6 naysayer... Jack Bates (Feb 09)
- Re: Looking for an IPv6 naysayer... Robert E. Seastrom (Feb 09)
- Re: Looking for an IPv6 naysayer... Jack Bates (Feb 09)
- Re: Looking for an IPv6 naysayer... Mark Andrews (Feb 09)
- Re: Looking for an IPv6 naysayer... Jens Link (Feb 10)
- Re: Looking for an IPv6 naysayer... Jens Link (Feb 10)
- Re: Looking for an IPv6 naysayer... Iljitsch van Beijnum (Feb 09)
- Re: Looking for an IPv6 naysayer... Benson Schliesser (Feb 10)
- Re: Looking for an IPv6 naysayer... Jack Bates (Feb 10)
- Re: Looking for an IPv6 naysayer... Benson Schliesser (Feb 10)
- Re: Looking for an IPv6 naysayer... Jack Bates (Feb 10)
- Re: Looking for an IPv6 naysayer... Owen DeLong (Feb 10)
- NAT444 rumors (was Re: Looking for an IPv6 naysayer...) Benson Schliesser (Feb 10)
- Re: [arin-ppml] NAT444 rumors (was Re: Looking for an IPv6 naysayer...) Chris Grundemann (Feb 17)
- RE: [arin-ppml] NAT444 rumors (was Re: Looking for an IPv6 naysayer...) Dan Wing (Feb 21)
- Re: [arin-ppml] NAT444 rumors (was Re: Looking for an IPv6 naysayer...) Owen DeLong (Feb 21)
- RE: [arin-ppml] NAT444 rumors (was Re: Looking for an IPv6 naysayer...) Dan Wing (Feb 21)
- Re: [arin-ppml] NAT444 rumors (was Re: Looking for an IPv6 naysayer...) Chris Grundemann (Feb 21)
- Re: [arin-ppml] NAT444 rumors (was Re: Looking for an IPv6 naysayer...) Benson Schliesser (Feb 22)
- Re: [arin-ppml] NAT444 rumors (was Re: Looking for an IPv6 naysayer...) Randy Bush (Feb 22)
- Re: [arin-ppml] NAT444 rumors (was Re: Looking for an IPv6 naysayer...) Benson Schliesser (Feb 22)