Merge "Stop reducing RA advertised ipv6 mtu by 16 - not needed." into rvc-dev am: 36ff42e508 am: 2ab13c6e54

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

Change-Id: Icaf4d01d69b6c06fc52e08c2164f49102ea042f1
tree: 48ab071e0490d63ed992be088162677e8cbc4955
  1. Tethering/