diff --git a/Shorewall/Perl/Shorewall/Nat.pm b/Shorewall/Perl/Shorewall/Nat.pm
index 9f45695f0..9dfb77e6e 100644
--- a/Shorewall/Perl/Shorewall/Nat.pm
+++ b/Shorewall/Perl/Shorewall/Nat.pm
@@ -280,7 +280,7 @@ sub process_one_masq1( $$$$$$$$$$$$ )
 			} elsif ( $family == F_IPV4 ) {
 			    if ( $addr =~ /^.*\..*\..*\./ ) {
 				$target = 'SNAT ';
-				my ($ipaddr, $rest) = split ':', $addr;
+				my ($ipaddr, $rest) = split ':', $addr, 2;
 				if ( $ipaddr =~ /^(.+)-(.+)$/ ) {
 				    validate_range( $1, $2 );
 				} else {
diff --git a/Shorewall/Perl/Shorewall/Rules.pm b/Shorewall/Perl/Shorewall/Rules.pm
index 34afae4e7..6d43be5ab 100644
--- a/Shorewall/Perl/Shorewall/Rules.pm
+++ b/Shorewall/Perl/Shorewall/Rules.pm
@@ -5553,7 +5553,7 @@ sub process_snat1( $$$$$$$$$$$$ ) {
 			}
 		    } elsif ( $family == F_IPV4 ) {
 			if ( $addr =~ /^.*\..*\..*\./ ) {
-			    my ($ipaddr, $rest) = split ':', $addr;
+			    my ($ipaddr, $rest) = split ':', $addr, 2;
 			    if ( $ipaddr =~ /^(.+)-(.+)$/ ) {
 				validate_range( $1, $2 );
 			    } else {