Re: Yes, I know this is the wrong mailing list
Mark Andrews <marka@isc.org> Wed, 11 July 2012 01:35 UTC
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To: George Mitchell <george+ipng@m5p.com>
From: Mark Andrews <marka@isc.org>
References: <4FFCCD9A.10605@m5p.com>
Subject: Re: Yes, I know this is the wrong mailing list
In-reply-to: Your message of "Tue, 10 Jul 2012 20:49:30 -0400." <4FFCCD9A.10605@m5p.com>
Date: Wed, 11 Jul 2012 11:35:29 +1000
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In message <4FFCCD9A.10605@m5p.com>, George Mitchell writes: > So I was trying to browse the list of IETF mailing lists at www.ietf.org > to see who might be interested in my failures to browse sites like > yahoo.com and netflix.com following the onset of World IPv6 Day. > > Except that I can't browse www.ietf.org either. > > It did work previously. I have a packet capture of the failing "telnet > www.ietf.org 80" session, if anyone is interested. It looks fine and > proper, all the expected SYNs and ACKs as I sent my HTTP request, > except for the failure to return any HTTP response. I'm running > FreeBSD 9.0-STABLE. 8.2-STABLE also fails the same way. No doubt you > can reach www.m5p.com over IPv6; it's been working for years. > > Would one of you be able to tell me which mailing should I be using? > My apologies for the inappropriate message. -- George Mitchell > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- This sort of failure is usually a PMTUD failure. If you are using a tunnel you need to ensure that your tunnel provider sends back PTB's. The IETF servers do see the PTB's. www.ietf.org does work over tunnels. You can test this theory by lowering the local mtu using "route change -inet6 :: -mtu 1280" (from memory). This will change the advertised mss from 1440. "route -n get -inet6 ::" will show you the current values. -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@isc.org
- Yes, I know this is the wrong mailing list George Mitchell
- Re: Yes, I know this is the wrong mailing list Mark Andrews
- Re: Yes, I know this is the wrong mailing list George Mitchell
- Re: Yes, I know this is the wrong mailing list Mark Andrews
- Re: Yes, I know this is the wrong mailing list George Michaelson
- Re: Yes, I know this is the wrong mailing list Glen
- Re: Yes, I know this is the wrong mailing list Jeroen Massar
- Re: Yes, I know this is the wrong mailing list George Mitchell
- Re: Yes, I know this is the wrong mailing list Simon Perreault
- Re: Yes, I know this is the wrong mailing list Thomas Dineen