Merge "Validate all INTERNET-providing VCN-managed networks" am: b56816d57b am: fdc1ee1f77 am: 27cfd96d61

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/1705647

Change-Id: I3b3fe684c12ffbd92fd149c9c1e8fd0ca8ba0df9