[182519] in North American Network Operators' Group
Re: 20-30Gbps UDP 1720 traffic appearing to originate from CN in last
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Mon Jul 20 14:57:25 2015
X-Original-To: nanog@nanog.org
To: Colin Johnston <colinj@gt86car.org.uk>
In-Reply-To: Your message of "Mon, 20 Jul 2015 19:42:39 +0100."
<608BFE1E-6FCC-4A58-A184-74EA4BD67182@gt86car.org.uk>
From: Valdis.Kletnieks@vt.edu
Date: Mon, 20 Jul 2015 14:57:18 -0400
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
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On Mon, 20 Jul 2015 19:42:39 +0100, Colin Johnston said:
> see below for china ranges I believe, ipv4 and ipv6
You may believe... but are you *sure*? (Over the years, we've seen
*lots* of "block China" lists that accidentally block chunks allocated
to Taiwan or Australia or other Pacific Rim destinations).
And remember - asking the NIC doesn't help, because there are almost
certainly blocks allocated that the registration points to Korea or
someplace, but the provider routes a sub-block to China. And let's
not even get started on blocks allocated by ARIN or RIPE....
(Yes, it *was* a trick question :)
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