Send UDP from Genymotion emulator to desktop

I tried to send udp with string data from B4A on Genymotion emulator to desktop B4J app. UDP packets don't arrive in B4j app.
I managed to send udp from desktop B4J app to desktop B4J app, and from one GM emulator to another.
I tried to use wi-fi IP, VirtualBoxNet IP for desktop host, 10.0.2.2, 10.0.3.2, 192.168.56.1 - doesn't work.
I tried app "UDP sender" from Google Play from emulator and real device - doesn't work.
Are there any other ideas ?

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