Your vet should provide you with either Revolution or an Ivermectin solution for either on-skin or oral treatment of the fur mites (the vet will tell you how to use the drug).
The vet should NOT offer Frontline - while Frontline works on the mite, it has the nasty side-effect of killing rabbits. Lethal stuff - the manufacturer of Frontline specifically states that Frontline CANNOT be used on rabbits.
Glad you caught the parasites so quickly!