sub Is_Host_Alive
{
    my ($host) = @_;
    my $tmp_syn=Net::Ping->new("syn");
    $tmp_syn->ping($host);
    if(!$tmp_syn->ack){
          # print "$host unreachable \n";
        $tmp_syn->close;
        return 0;
    }
    $tmp_syn->close;
    return 1;
}

[download]

sometimes the running result is correct,but sometimes is wrong.

In reply to Net::ping is very unstable by hxbsy

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