Merge "Improve RouterAdvertisementDaemonTest." am: 662237f2f8 am: 3b2ad2b764 am: b8aa244e11

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1669025

Change-Id: If6f9a6f06c38c75282660334d5b39153c13dbb5b
tree: 2b75950a62d3e59552b93d9d4718ceac828c5ec4
  1. tests/
  2. Tethering/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING