tree e9975fe33f673c22a418bf3838c3a5dfa3cd4796
parent 9c820cdebf1ee13e63d5706c71750df292bd5d3d
author Erik Kline <ek@google.com> 1467966086 +0900
committer Mitchell Wills <mwills@google.com> 1472495204 -0700

Add IPv6 tethering coordinator

Add an IPv6TetheringCoordinator to TetheringMaster StateMachine, which
receives and processes NetworkState updates and passes the necessary IPv6
information to the revelant TetherInterfaceStateMachine.

Add an IPv6TetheringInterfaceServices to TetherInterfaceStateMachine, which
is responsible for adding local network routes and managing an IPv6
RouterAdvertisementDaemon.

Partial cherry-pick of only interfaceType method
Bug: 9580643
Change-Id: I3eaae460b80752e2115359d7bde873a1e9ea515a
(cherry picked from commit 1eb8c69bed1615e9502e94b1a676773ed28abfd9)