Android Emulator and Virtual HCI socket connection issue

Hi,

I am trying to connect android emulator to Bluetooth controller created using btvirt (https://manpages.debian.org/unstable/bluez-test-tools/btvirt.1.en.html).

OS: Ubuntu
Android Emulator: v34
Steps:
1. I created a virtual Bluetooth controllers using command `sudo btvirt -d -l3`. It has working virtual BLE devices which communicates with each other


2. I am trying to connect android emulator to that virtual environment over hci using bumble hci bridge
`sudo capsh --caps="cap_net_admin+eip cap_setpcap,cap_setuid,cap_setgid+ep" --keep=1 --user=$USER --addamb=cap_net_admin -- -c "$(which bumble-hci-bridge) android-netsim:_:8880,mode=controller hci-socket:2"`
`emulator -avd Android1 -accel auto -gpu auto -packet-streamer-endpoint localhost:8080 -no-snapshot-load`

However, the android emulator shows missing Bluetooth adaptor and I am not able to turn it on in emulator (Note: The Android app works with a physical Bluetooth dongle, so the issue lies with the virtual dongles created using btvirt.)

Do you know what might be the issue?