Comment 18 for bug 94940

I'm attaching a small C program to demonstrate the issue. It attempts
to reverse map the address 255.0.0.0, which is within a reserved range
and therefore does not have a reverse mapping.

On my Feisty system, it takes about five seconds to run (with the
unmodified /etc/nsswitch.conf). On my other systems, it runs in
a small fraction of a second.