job screening question

Owen DeLong owen at delong.com
Thu Jul 5 21:30:04 CDT 2012


On Jul 5, 2012, at 6:17 PM, valdis.kletnieks at vt.edu wrote:

> On Thu, 05 Jul 2012 15:05:01 -0600, Derek Andrew said:
>> Isn't MTU discovery on IP and not TCP?
> 
> AIX actually supported PMTUD for UDP.  Not sure if it still does.  Yes, it was
> bizarro even for AIX.  No, I'm not aware of any actual UDP applications that
> were able to do anything useful with this info. ;)
> 

Think IPSEC NAT Traversal over UDP and/or Teredo.

(Yes, Teredo is ugly and should be banned from any legitimate network, but...)

Owen




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