In order to get all interfaces on your emulator or device you could use netcfg:
# netcfg
lo UP 127.0.0.1 255.0.0.0 0x00000049
dummy0 DOWN 0.0.0.0 0.0.0.0 0x00000082
rmnet0 DOWN 0.0.0.0 0.0.0.0 0x00001002
rmnet1 DOWN 0.0.0.0 0.0.0.0 0x00001002
rmnet2 DOWN 0.0.0.0 0.0.0.0 0x00001002
tiwlan0 DOWN 0.0.0.0 0.0.0.0 0x00001002