[automerger skipped] Inform the DNS resolver when it needs to do DNS64 synthesis. am: 119ecc6867 -s ours

am skip reason: Change-Id If8ad2d30712a6df3e207c8d3e8a129705242191e with SHA-1 f28b6b705c is in history

Change-Id: Iec52ca510f3c066abbd96636c595acb89828c29a
tree: 6c93356e8743104da573db20c4c446c267e841c6
  1. core/
  2. services/
  3. tests/