Display Network if Screensaver is On

[noxx]

hello

is it possible to disable the Network-(card) if the screensaver is ON?

Background: The PI runs 24hours. My GameServer for Moonlight dont go in
Standby if the PIs is available over network.

Screesaver off -> Network On
Screensaver on -> Network Off
Screensaver off -> Network On (and perhaps an WOL to my Server)