Re: [NANOG] Microsoft.com PMTUD black hole? (working with Microsoft on issues)

[Niels Bakker <niels=nanog () bakker net>]

* netgeek () bgp4 net (Janet Sullivan) [Thu 08 May 2008, 23:35 CEST]:
> 1) Yes, Microsoft blocks ICMP for the most part, which will break Path 
> MTU Discovery.  This is a known issue.  If you run into it, its most 
> likely because the servers you are trying to talk to in MS-land don't 
> have black hole router detection turned on.

I find it hilarious that one part of the company had to come up with a 
hack to work around the inability of another part of the company to 
understand how TCP/IP works


        -- Niels.

-- 

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