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

  • From: Niels Bakker
  • Date: Thu May 08 18:44:42 2008

* [email protected] (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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