From owner-freebsd-hackers@FreeBSD.ORG  Tue Feb  1 23:29:18 2005
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Date: Tue, 01 Feb 2005 18:29:00 -0500
From: David Scheidt <dmschei@attglobal.net>
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Subject: /etc/hosts lines starting with white space are ignored
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If a line in /etc/hosts starts with a space or tab, it's not read. I'm 
not sure that's really a desirable behavior.  I'm quite sure it's not 
the vehavior I expected.

It looks like it's the usage of strpbrk() in the gethostent() function 
of src/lib/libc/net/gethostbyht.c.  It wouldn't  be hard to fix it to 
find hostnames on lines starting with " \t".  Should I submit a patch?