Merge "[automerger skipped] Test that if an RA sets the same prefix as DNS, nothing happens. am: fbf205a380 am: bc7b68512d am: 627e36992b -s ours" into rvc-qpr-dev-plus-aosp am: 36d9389ddc -s ours

am skip reason: Change-Id I3316d49d42100800740afadc4edf0a13a4d8377c with SHA-1 fbf205a380 is in history

Change-Id: I19602a98f7bf371d1cc0c742b82460c0480c2be8