STM32 nucleo- U5A5- Unable to get ethernet on android OS when using usb with cdc ncm

[nakshatra_04]

I was trying to configure ethernet on my android phone via using usb cdc ncm on stm32 nucleo U5A5 and i was unable to see the ethernet option in the network settings of the phone.It was completely greyed out. I tried the same on ios and i was able to connect via ethernet. What am i supposed to do to resolve this ?
im using ncm of tiny usb for this connectivity.

[Peter BENSCH]

Which Ethernet adapter have you connected to the Android phone?

Regards
/Peter