-If requested to generate mac addresses in one of vmware's ouis, mask out two bits

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@6075 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

perl-xCAT/xCAT/VMCommon.pm

@@ -213,6 +213,9 @@ sub genMac { #Generates a mac address for a node, does NOT assure uniqueness, ca
     my $prefix = shift;
     if ($prefix) { #Specific prefix requested, honor it
         my $tail = int(rand(0xffffff)); #With only 24 bits of space, use random bits;
+        if ($prefix eq '00:50:56') { #vmware reserves certain addresses in their scheme if this prefix used
+            $tail = $tail&0x3f; #mask out the two bits in question
+        }
         $tail = sprintf("%06x",$tail);
         $tail =~ s/(..)(..)(..)/:$1:$2:$3/;
         return $prefix.$tail;