Merge "check whether the network interface exists before using it" into main am: 72752ea0

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3359786



Change-Id: I05e2c89559f92812c72df6e80d71271b7fa22c55
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>