--- lib/PXElator/client.pm	2009/08/10 00:07:38	190
+++ lib/PXElator/client.pm	2009/08/10 17:30:01	194
@@ -71,4 +71,30 @@
 
 }
 
+sub ip_from_mac {
+	my $mac = shift;
+
+	$mac = lc $mac;
+	$mac =~ s{:}{}g;
+
+	my $mac_path = "$server::conf/mac/$mac";
+	return unless -e $mac_path;
+
+	my $ip;
+
+	if ( -f $mac_path ) {
+		$ip = read_file $mac_path;
+		unlink $mac_path;
+		symlink "$server::conf/ip/$ip", $mac_path;
+		warn "I: upgrade to mac symlink $mac_path\n";
+	} elsif ( -l $mac_path ) {
+		$ip = readlink $mac_path;
+		$ip =~ s{^.+/([^/]+)$}{$1};
+	} else {
+		die "$mac_path not file or symlink";
+	}
+
+	return $ip;
+}
+
 1;