[NANOG] Microsoft.com PMTUD black hole?

[brandon at rd.bbc.co.uk (Brandon Butterworth)]

> Has anyone else here seen problems with microsoft/msn/hotmail/live.com 
> sites not performing PMTUD correctly?

I used to see it a lot when hosting on windows was popular and people
realised they needed a firewall or decided to add a load balancer
but broke PMTUD by leaving it enabled on the servers.

I've not heard of it for some time so those people got
a clue or moved to something else (or everyone worked around them)

brandon