* Make ifa_add_loopback_route() prepare gw before insertion.
* Temporarily move ifa_switch_loopback_route() implementation to route.c
Provide rte_<get|set> methods to access rtentry for external consumers.
* Unify lle table dump/prefix removal code.
* Rename lla_XXX -> lltable_XXX_lle to reduce number of name prefixes
  used by lltable code.