For everyone else, I recommend https://pritunl.com or https://www.zerotier.com to get VPN access easily. Pritunl is more traditional client/server while ZeroTier creates 1 giant LAN between as many machines as you want.
Thank you for mentioning them!!! Was just looking for a solution for connecting my VPSs across DO, Vultr and Lightsale ZeroTier looks like a perfect solution