Good explanation, but the conclusion is backwards. Line 10 and 28 are correct; it's line 5 that's wrong. There are multiple nics, so there should be multiple hashes. The real problem is that the function pretends there's only one. It should be returning a list of nics (list of hashes). 

sub networkInfo {
    my @nics;
    my $platform = getPlatform();
    if ($platform =~ /RedHat/) {
        my $ifconfig = qx|/sbin/ifconfig|
            or die("Can't get info from Linux ifconfig: $!\n");
        for (split /(?<=\n)(?=\w)/, $ifconfig) {
            my %nic;
            ($nic{device}) = /^(eth\d)\s/
                or next;
            if (/\binet addr:([\d.]+)\s.+?:([\d.]+)\s.+?:([\d.]+)/) {
                $nic{ip}    = $1;
                $nic{bcast} = $2;
                $nic{mask}  = $3;
            }
            if (/^\s+ inet6 addr:\s*(\S+)/m) {
                $nic{ip6} = $1;
            }
            push @nics, \%nic;
        }
    } elsif ($platform =~ /SunOS/) {
        my $ifconfig = qx|/sbin/ifconfig -a|
            or die("Can't get info from Solaris ifconfig: $!\n");
        for (split /(?<=\n)(?=\w)/, $ifconfig) {
            my %nic;
            ($nic{device}) = /^(fjgi\d)\s/
                or next;
            if (/\binet addr:([\d.]+)\s.+?:([\d.]+)\s.+?:([\d.]+)/) {
                $nic{ip}    = $1;
                $nic{bcast} = $2;
                $nic{mask}  = $3;
            }
            if (/^\s+ inet6 addr:\s*(\S+)/m) {
                $nic{ip6} = $1;
            }
            push @nics, \%nic;
        }    
    }
    return @nics;
}

for my $nic (networkInfo()) {
    print(join( "\t",
        map $_//'[undef]',
        @{$nic}{qw( device ip ipv6 bcast mask )} ), "\n");
}

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Update: Cleaned up opening paragraph.
Update: Second push discovered ability to turn invisible. Added anti-invisibility field to post so it's visible again.

In reply to Re^2: Data::Dumper is returning empty by ikegami
in thread Data::Dumper is returning empty by MikeDexter

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