[automerger skipped] Merge "Don't crash when receiving an RTM_DELNEIGH or NUD_FAILED." into rvc-dev am: 3edb9bab am: 221b3848 am: a6c8f44d am: f035d7a2 -s ours am: 14dd87b7 -s ours

am skip reason: Change-Id I26d89a81f1c448d9b4809652b079a5f5eace3924 with SHA-1 8bc1e54d is in history

Change-Id: Iadb408f3b6a6538ed52a0bfd5d13912211aacaac