Merge "Validate or set the eth specifier on update Iface" am: 85694dc277

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2128511

Change-Id: I5ebaff5ea668a2d23ab27a3200119a99e04b1eaf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>