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Ping puzzle

Subject: Ping puzzle
From: jc at trillian.mit.edu (John Chambers)
Date: Wed, 26 Mar 2003 19:44:34 UTC

Here's a bizarre puzzle that I've been trying  to  solve  on  several
linux boxen:  How does a parent process read the stderr of /bin/ping?

It oughta be trivial.  But consider this ping of a  machine  that  is
down at the moment:

$ /bin/ping -n -i 10 64.28.81.46
PING 64.28.81.46 (64.28.81.46) from 207.172.135.95 : 56 data bytes

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