docker-machine/docs/reference/restart.md

restart

Usage: docker-machine restart [arg...]

Restart a machine

Description:
   Argument(s) are one or more machine names.

Restart a machine. Oftentimes this is equivalent to docker-machine stop; docker-machine start. But some cloud driver try to implement a clever restart which keeps the same ip address.

$ docker-machine restart dev
Waiting for VM to start...