oh, the 'driver' is the drive, I guess
Works ok on my DIR-626L, both Lan access and Wan access, both using IPv4 or IPv6.
There is one little ambiguity I think :
When you create a user, directly giving him read/write access seems to work, but the write access is not recorded, and this is visible on the webadmin storage menu.
First create a user, Save the page, and then give him read/write access.
Beside, do create a specific folder for your user, I'm not sure a user can access the root folder ...
Without feedback or screenshots from Disapointed, difficult to do more
FurryNutz, does mydlink registering offer you some added features or technical possibilities storage-wise ? ( like a pseudo DNS record, or anything .. ? )