-Fix bitwise operator error in previous checkin

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@7675 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

perl-xCAT/xCAT/VMCommon.pm

@@ -234,7 +234,7 @@ sub genMac { #Generates a mac address for a node, does NOT assure uniqueness, ca
     #First thought was to go to 13 bits, but by fixing our generated mac addresses to always start with the same byte and still be unique
     #this induces libvirt to do unique TAP mac addresses
     my $leading = int(rand(0xff));
-    $leading = $leading & 0x4200;
+    $leading = $leading | 0x4200;
     #If this nodename is a resolvable name, we'll use that for the other 32 bits
     my $low32;
     my $n;