There are a couple ways you could do this - what I'd probably do is set a constant $MAX_RETRIES and then either locally decrement this, or count a loopcounter up to this, using last if a connection is made.

For example: (untested code)

my $MAX_RETRIES = 3;
foreach (@host) {
  foreach $attempt ( 1 .. $MAX_RETRIES ) {
    my $sock = IO::Socket::INET->new(PeerAddr => $_,
                                     PeerPort => $port,
                                     Proto    => 'tcp',
                                     timeout => '10')
                                     and $connected = 1;
    last if $connected;
  }
  unless $connected print "$_ is NOT connected.\n" && run_fix();
}
[download]

You could extend this to have the script sleep for a set number of seconds before retries, which is maybe a good idea if there's lag involved on the network.

Just some quick ideas ..
Hope that helps.
-- Foxcub