diff --git a/Shorewall/Perl/Shorewall/Providers.pm b/Shorewall/Perl/Shorewall/Providers.pm
index ff56c7115..1085b7ef7 100644
--- a/Shorewall/Perl/Shorewall/Providers.pm
+++ b/Shorewall/Perl/Shorewall/Providers.pm
@@ -121,7 +121,9 @@ sub setup_route_marking() {
 	}
 
 	if ( $providerref->{shared} ) {
+	    add_commands( $chainref, qq(if [ -n "$providerref->{mac}" ]; then) ), incr_cmd_level( $chainref ) if $providerref->{optional};
 	    add_rule $chainref, match_source_dev( $interface ) . "-m mac --mac-source $providerref->{mac} -j MARK --set-mark $providerref->{mark}";
+	    decr_cmd_level( $chainref ), add_commands( $chainref, "fi\n" ) if $providerref->{optional};
 	} else {
 	    add_rule $chainref, match_source_dev( $interface ) . "-j MARK --set-mark $providerref->{mark}";
 	}
@@ -520,13 +522,7 @@ sub add_a_provider( ) {
 
     if ( $optional ) {
 	if ( $shared ) {
-	    my $var = $providers{$table}{mac};
-	    
-	    $var =~ s/^\$//;
-
-	    emit ( "    error_message \"WARNING: Gateway $gateway is not reachable -- Provider $table ($number) not Added\"" ,
-		   "    $var=02:00:00:00:00:00" );
-	    
+	    emit ( "    error_message \"WARNING: Gateway $gateway is not reachable -- Provider $table ($number) not Added\"" );	    
 	} else {
 	    emit ( "    error_message \"WARNING: Interface $physical is not usable -- Provider $table ($number) not Added\"" );
 	}
diff --git a/Shorewall/Perl/Shorewall/Zones.pm b/Shorewall/Perl/Shorewall/Zones.pm
index 174a877b4..490c6c2b0 100644
--- a/Shorewall/Perl/Shorewall/Zones.pm
+++ b/Shorewall/Perl/Shorewall/Zones.pm
@@ -84,7 +84,7 @@ our @EXPORT = qw( NOTHING
 		 );
 
 our @EXPORT_OK = qw( initialize );
-our $VERSION = '4.4_16';
+our $VERSION = '4.4_15';
 
 #
 # IPSEC Option types
@@ -913,7 +913,7 @@ sub process_interface( $$ ) {
 	$root = substr( $interface, 0, -1 );
 	$roots{$root} = $interface;
 	my $len = length $root;
- 
+	
 	if ( $minroot ) {
 	    $minroot = $len if $minroot > $len;
 	} else {
@@ -1209,23 +1209,23 @@ sub known_interface($)
 
     my $iface = $interface;
 
-    while ( 1 ) {
-	chop $iface;
+    if ( $minroot ) {
+	while ( length $iface > $minroot ) {
+	    chop $iface;
 	
-	return 0 if $iface eq '';
-	
-	if ( my $i = $roots{$iface} ) {
-	    $interfaceref = $interfaces{$i};
+	    if ( my $i = $roots{$iface} ) {
+		$interfaceref = $interfaces{$i};
 
-	    my $physical = map_physical( $interface, $interfaceref );
+		my $physical = map_physical( $interface, $interfaceref );
 
-	    return $interfaces{$interface} = { options  => $interfaceref->{options} ,
-					       bridge   => $interfaceref->{bridge} ,
-					       name     => $i ,
-					       number   => $interfaceref->{number} ,
-					       physical => $physical ,
-					       base     => chain_base( $physical ) ,
-					     };
+		return $interfaces{$interface} = { options  => $interfaceref->{options} ,
+						   bridge   => $interfaceref->{bridge} ,
+						   name     => $i ,
+						   number   => $interfaceref->{number} ,
+						   physical => $physical ,
+						   base     => chain_base( $physical ) ,
+						 };
+	    }
 	}
     }
 
diff --git a/Shorewall/releasenotes.txt b/Shorewall/releasenotes.txt
index 3afa6697f..f0c3cae43 100644
--- a/Shorewall/releasenotes.txt
+++ b/Shorewall/releasenotes.txt
@@ -33,6 +33,11 @@ Beta 6
 
      - Failure to treat the interface as optional or required.
 
+4)  Where two ISPs share the same interface, if one of the ISPs was not
+    reachable, an iptables-restore error such as this occurred:
+
+      iptables-restore v1.4.10: Bad mac address "-j"
+
 Beta 5
 
 1)  Previously, proxy ARP with logical interface names did not