[automerger skipped] Merge "Test for unexpected prefix updates in...
[automerger skipped] Merge "Test for unexpected prefix updates in SetAndClearNat64Prefix." into rvc-dev am: d5de13da am: 67bdfa12 -s ours
am skip reason: Change-Id Ic86f93161293b4ad5366fd9cab2e26d4a6f636c4 with SHA-1 61f796b5 is in history
Change-Id: I1c62966481429e0c605f2345b006bc9e4cc41c0f