Actually there is a nice reason for any reasonable sized stack to support v6. it makes life easier. you run globally addressable ranges that just make life eas

Actually there is a nice reason for any reasonable sized stack to support v6. it makes life easier. you run globally addressable ranges that just make life easier as you get to remove all those wonderful dnats and snats in your networks. as your internal ranges become easier to manage and more plentiful so you can layout your networks in ways that make sense. group services in IPs that make sense without ever really worrying about exhausting those ranges. comcast for example moved to v6 because they ran out of rfc1918 to run their administrative networks in.