--- lib/PXElator/network.pm	2009/07/31 17:07:39	82
+++ lib/PXElator/network.pm	2009/07/31 17:35:20	84
@@ -7,6 +7,11 @@
 
 use server;
 
+sub ifconfig {
+	my $dev = shift;
+	`/sbin/ifconfig $dev`
+}
+
 sub tap {
 
 	my $interfaces = read_file '/etc/network/interfaces';
@@ -28,9 +33,14 @@
 
 	}
 
-	`/sbin/ifconfig tap0 2>/dev/null` =~ m{UP} || system "sudo ifup tap0";
-
-	1;
+	my $ifconfig = ifconfig('tap0');
+	if ( $ifconfig =~ m{UP} ) {
+		 $ifconfig =~ m{$server::ip}s && return 'up';
+		system("sudo /sbin/ifconfig tap0 $server::ip netmask $server::netmask") == 0 && return "ip changed $server::ip";
+		die "can't change IP address of tap0 to $server::ip";
+	}
+	system("sudo ifup tap0") == 0				&&	return 'started';
+	die "can't start tap0: $!";
 }
 
 1;