Merge "Merge "Stop reducing RA advertised ipv6 mtu by 16 - not needed." into...

Merge "Merge "Stop reducing RA advertised ipv6 mtu by 16 - not needed." into rvc-dev am: 14756a8c am: 27f4966f" into rvc-d1-dev-plus-aosp am: cdc45cc7 am: 3ff113c1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11620914

Change-Id: I72b8d4409332c38fe1c1fd274a2cc0e7464f13e6