You are confusing the hell out of me LOL Current address is mentioned on DL but you Live at the Mailing address? What does that even mean?
anyways you can make your own life easier and just click the button that says your mailing address is the same as your home address and they will just send it to your house, they do not care what address is on your DL just what address you put on the application.
Most people do not update their address ( me included, you just reminded me to go update mine with service Ontario i will do that online right now LOL)
Just simplify it and put your home address as your mailing address and if you mailing address is different from your home address then put the most up to date info in both line and that is what they will process.