Index: bin/get_ip_from_ifconfig.pl
===================================================================
--- bin/get_ip_from_ifconfig.pl	(revision 57d3e5400ce51f1881320585b520bc5f88f004ce)
+++ bin/get_ip_from_ifconfig.pl	(revision 57d3e5400ce51f1881320585b520bc5f88f004ce)
@@ -0,0 +1,14 @@
+#!/usr/bin/perl
+use strict;
+use Data::Dumper;
+
+my $interface;
+my %IPs;
+
+foreach ( qx{ (LC_ALL=C /sbin/ifconfig -a 2>&1) } ) {
+	$interface = $1 if /^(\S+?):?\s/;
+        next unless defined $interface;
+        $IPs{$interface}->{STATE}=uc($1) if /\b(up|down)\b/i;
+        $IPs{$interface}->{IP}=$1 if /inet\D+(\d+\.\d+\.\d+\.\d+)/i;
+}
+print Dumper(\%IPs);
Index: bin/get_ip_from_ioctl.pl
===================================================================
--- bin/get_ip_from_ioctl.pl	(revision 57d3e5400ce51f1881320585b520bc5f88f004ce)
+++ bin/get_ip_from_ioctl.pl	(revision 57d3e5400ce51f1881320585b520bc5f88f004ce)
@@ -0,0 +1,36 @@
+#!/usr/bin/perl
+use strict;
+use warnings;
+require 'sys/ioctl.ph';
+use Socket;
+
+my %interfaces;
+my $max_addrs = 30;
+socket(my $socket, AF_INET, SOCK_DGRAM, 0) or die "socket: $!";
+
+{
+    my $ifreqpack = 'a16a16';
+    my $buf = pack($ifreqpack, '', '') x $max_addrs;
+    my $ifconf = pack('iP', length($buf), $buf);
+
+    # This does the actual work
+    ioctl($socket, SIOCGIFCONF(), $ifconf) or die "ioctl: $!";
+
+    my $len = unpack('iP', $ifconf);
+    substr($buf, $len) = '';
+
+    %interfaces = unpack("($ifreqpack)*", $buf);
+
+    unless (keys(%interfaces) < $max_addrs) {
+        # Buffer was too small
+        $max_addrs += 10;
+        redo;
+    }
+}
+
+for my $addr (values %interfaces) {
+    $addr = inet_ntoa((sockaddr_in($addr))[1]);
+}
+
+use Data::Dumper;
+print Dumper \%interfaces;