Sorry, I used a 5.10 construct. Change

map $_ // '[undef]'
[download]

to

map defined($_) ? $_ : '[undef]'
[download]

Update:

Concerning the code you posted, you introduced numerous errors:

• You're assigning a list of nicdata to a hash.
• Your hash is named nicdata, but it does contains the data about multiple nics.
• You use @nicdata without ever placing any information in it.
• Your array is named nicdata, but it's suppose to contain the data about multiple nics.
• You use %nic without ever placing any information in ti.
• You pass $platform as an argument as though it can change.

for my $nic (networkInfo()) {
    print "Device: $nic->{device} has IP Address $nic->{ip}\n" .
        "\tMask: $nic->{mask}\n" .
        "\tBroadcast: $nic->{bcast}\n";
    print "Device: $nic->{device} also IPv6 address $nic->{ip6}\n"
        if defined($nic->{device});
}
[download]

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