- my @mac = split(/:/,$macsettings{"MAC2"});
- if ($#mac == 5) {
- foreach (@mac) {
- unless ($_ =~ /^[a-fA-F0-9]{1,2}$/) {
- $errormessage = $Lang::tr{'mac address error not valid'};
- last;
+
+ if ( not ($macsettings{'MAC2'} eq "" )) {
+ my @mac = split(/:/,$macsettings{"MAC2"});
+ if ($#mac == 5) {
+ foreach (@mac) {
+ unless ($_ =~ /^[a-fA-F0-9]{1,2}$/) {
+ $errormessage = $Lang::tr{'mac address error not valid'};
+ last;
+ }