[193551] in North American Network Operators' Group
Re: DOT FRA website broken on ipv6
daemon@ATHENA.MIT.EDU (Mark Andrews)
Thu Feb 2 15:25:54 2017
X-Original-To: nanog@nanog.org
To: Ca By <cb.list6@gmail.com>
From: Mark Andrews <marka@isc.org>
In-reply-to: Your message of "Thu, 02 Feb 2017 10:22:52 -0800."
<CAD6AjGRoZh+SJ8tDCMSbp3wsvPDFFn3ZO5JiAbw2j4Ea9VmVcg@mail.gmail.com>
Date: Fri, 03 Feb 2017 07:25:41 +1100
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
In message <CAD6AjGRoZh+SJ8tDCMSbp3wsvPDFFn3ZO5JiAbw2j4Ea9VmVcg@mail.gmail.com>, Ca By writes:
> Anyone have a contact at DOT or FRA that can solve this? It would be
> really nice if they remove the DNS AAAA record on www.fra.dot.gov until it
> works correctly, customers are complaining
While the web site should be fixed / made reachable it shouldn't
matter if a single path to a site is down. This is basically due
to crappy multi-home support in clients. You don't have to wait
minutes to start to fallover to alternate addresses.
Tell your clients to install modern browsers that do happy eyeballs.
Fast failover should be in every application. It is trivial to do
for TCP based applications. https://users.isc.org/~marka/ has
sample code showing how to do it.
Don't choose DNS64/NAT64 as your IPv6-only solution as it removes
the ability to fallback to IPv4 on IPv6 failure.
Mark
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka@isc.org
