Switch RouteInfo to use IpPrefix instead of LinkAddress.

This addresses a TODO and also makes it possible to create
routes to destinations that are not valid LinkAddresses, such as
multicast addresses.

Bug: 16875580
Change-Id: Id4c77b00dc3064bf27d78cdcbbe035e645748cfe
2 files changed
tree: dd8e13a9ac39f0fee599911f1d7848539ed504d1
  1. core/
  2. services/
  3. tests/