[188619] in North American Network Operators' Group
Re: Stop IPv6 Google traffic
daemon@ATHENA.MIT.EDU (Niels Bakker)
Sun Apr 10 10:50:26 2016
X-Original-To: nanog@nanog.org
Date: Sun, 10 Apr 2016 16:50:22 +0200
From: Niels Bakker <niels=nanog@bakker.net>
To: nanog@nanog.org
Mail-Followup-To: nanog@nanog.org
In-Reply-To: <570A5543.1030009@netassist.ua>
Errors-To: nanog-bounces@nanog.org
* maxtul@netassist.ua (Max Tulyev) [Sun 10 Apr 2016, 15:30 CEST]:
>I need to stop IPv6 web traffic going from our customers to Google
>without touching all other IPv6 and without blackhole IPv6 Google
>network (this case my customers are complaining on long timeouts).
>
>What can you advice for that?
You can add a reject route at your borders rather than nullroute.
That will cause ICMP Unreachables to be sent by your routers back to
your customers so their applications will know immediately to retry
using IPv4 rather than waiting for TCP timeouts.
Alternatively, you could ask Google to exempt your nameservers from
being responded to with AAAA records - something that may happen
automatically if v6 connectivity is bad.
-- Niels.
