netkit-base-0.10-37 on RH61:
192.168.100.103 is on the air and 192.168.100.105 is switched off.
ping -c 1 192.168.100.103 ; echo $?
ping -c 1 192.168.100.105 ; echo $?
Both give exit status 0, but the ping to the machine that is switched off
should give '1' as exit status.
*** This bug has been marked as a duplicate of 6633 ***