Board Thread:Questions and Answers/@comment-97.103.66.98-20151202041450/@comment-26091666-20151202050050

Nothing bad will happen. You can even play two accounts on one computer as well as perhaps have your (kc) friends playing whilst using your internet connection.

The general rule still applies, and that is you're not meant to sign into DMM on two different IP addresses and/or trying to play the game on two different IP address.