Arri cameras from the SXT and up are supported by CineLink.
Arri cameras connect via a wired Ethernet link. This requires an adapter cable.
In the menu, navigate to System->Camera Access Protocol (CAP) and check CAP Server Enabled.
To get your IP Address, go to System->Network/Wifi
Earlier models (SXT/LF) only allow one connection to the camera at a time. Newer models allow up to 4. Each licensed CineLink computer is a separate connection.