– type “route print” in command prompt
– note the lowest metric number
– open your ethernet card properties
– open TCP/IP v4
– delete gateway if exist
– untick automatic metric
– enter the metric number you noted in command promt.
It worked for me. VPN-adapter had metric number 1. (so DNLA was actif on that network). I changed or better, I entered 1 in the metric setting of the desired network interface ‘as sais above) . After restart of this programm (SWYH) the stream was send via correct (desired) network interface.