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SubjectRe: loopback and TCP retransmit timer
   Date: Sat, 02 May 1998 19:21:45 +0200
From: Rob van Nieuwkerk <>

> And you're sending to port zero where nobody can listen, so the resets
Why's that ? I've been wondering about it before.
Do I miss something obvious ?

It's more so by accident in all the existing implementations than
intentional, actually it is probably because 0's have special meaning
in many parts of ipv4 as a "wildcard" value, so this is probably where
it comes from.

David S. Miller

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