What's going wrong here?

#!/usr/bin/perl5 -w
use Net::Ping;

my @pinglist =    (
                 "svhappy"
                ,"w01b0rji"
                ,"w01b0rji.cube.fred.ch"
                ,"svmoloch.flur.fred.ch"
                ,"160.69.125.142"
                );

$p = Net::Ping->new();
        
foreach $h (@pinglist)
{
    chomp (my $res = `ping $h`);
    if ($res) {print "$h \`ping\` OK :\t$res\n"}
    else {print "$h \`ping\` NOK\n"}
    if ($p->ping($h)) {print "$h \$p->ping OK\n"}
    else {print "$h \$p->ping NOK\n"}
    print "\n";
}
$p->close();

[download]

...gives following results:

(svmoloch:szhxrv) $ ./test.pl

ping: unknown host svhappy
svhappy `ping` NOK
svhappy $p->ping NOK

ping: unknown host w01b0rji
w01b0rji `ping` NOK
w01b0rji $p->ping NOK

w01b0rji.cube.fred.ch `ping` OK : w01b0rji.cube.fred.ch is alive
w01b0rji.cube.fred.ch $p->ping NOK

svmoloch.flur.fred.ch `ping` OK : svmoloch.flur.fred.ch is alive
svmoloch.flur.fred.ch $p->ping NOK

160.69.125.142 `ping` OK : 160.69.125.142 is alive
160.69.125.142 $p->ping NOK

In reply to Unexpected results from ping by GreyOwl

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