Hi. I am a Perl Newbie (so my Question might be silly) and I tried to try the Net::Ping Module: 
#!/usr/bin/perl -w
use Net::Ping;
foreach $IP ("192.168.0.4","192.168.0.21","192.168.0.34") {
  $p = Net::Ping->new();
  next unless $p->ping($IP);
  $p->close;
}

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The error-message I get is: Use of uninitialized value in subroutine entry at /usr/lib/perl5/5.6.0/i586-linux/Socket.pm line 311. Bad arg length for Socket::unpack_sockaddr_in, length is 0, should be 16 at /usr/lib/perl5/5.6.0/i586-linux/Socket.pm line 311. The hosts are command-line-pingeable therefore I am absolutly clueless. Regards

In reply to Net::Ping does not ping by very empty

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