http://tinycult.blogspot.com/2010/07/joining-machine-to-active-directory.html

  1. make sure that the machine you'd like to join to the domain is a member of the same Hamachi network as the domain controller
  2. it can see the DC.
  3. Ping std.hamachi.logmein.com to get the IP address of the Hamachi intermediation server
  4. On the machine that is joining the domain, set the Local Connection DNS setting to the Hamachi IP address of your domain controller.
  5. Now go into the Hamachi 2 client on the machine being joined to the domain.
  5.1 Go to Preferences, Settings, Advanced settings, Server connections, Server address 
  5.2 and hardcode the IP address of the Hamachi intermediation server there (std.hamachi.logmein.com).
  6. I was able to join the domain, I just had to manually input the DNS of the domain on the hamachi network connection