sudo serveradmin settings vpn:Servers:com.apple.ppp.pptp:enabled
sudo serveradmin settings vpn:Servers:com.apple.ppp.l2tp:enabled
sudo serveradmin settings vpn:Servers:com.apple.ppp.pptp:IPv4:DestAddressRanges
sudo serveradmin settings vpn:Servers:com.apple.ppp.pptp:DNS:OfferedServerAddresses:_array_index
sudo serveradmin settings vpn:Servers:com.apple.ppp.l2tp:DNS:OfferedServerAddresses:_array_index
sudo serveradmin settings vpn:Servers:com.apple.ppp.l2tp:L2TP:IPSecSharedSecretValue
sudo port -v install openvpn2