type in 'ethergate' in the search tool above - there are 2 topics that come up - the first has 14 replies - and by the end is v helpful.... basically, make sure you have the correct firmware and mode set both internally and in config software.

Artnet subnet should be 255.0.0.0 to allow for the maximum number of device IP addresses set by their unique MAC (not apple MAC!) addres.

Note - If you're only using the last digit in your IP address and you know the box is too, then 255.255.255.0 will work ie IP=2.0.0.x or 10.0.0.x Some routers with DHCP will not support 255.0.0.0 subnet so you have to work with 255.255.255.0 - hense some issues arise if the equipment IP address is 2.x.x.x or 10.x.x.x. Also bear in mind that 10.x.x.x addressed are not passed by routers as default - where usually 2.x.x.x are