72fa642a86
to _ro_rt. Use rtcache_getrt() to access a route cache's struct rtentry *. Introduce struct ifnet->if_dl that always points at the interface identifier/link-layer address. Make code that treated the first ifaddr on struct ifnet->if_addrlist as the interface address use if_dl, instead. Remove stale debugging code from net/route.c. Move the rtflush() code into rtcache_clear() and delete rtflush(). Delete rtalloc(), because nothing uses it any more. Make ND6_HINT an inline, lowercase subroutine, nd6_hint. I've done my best to convert IP Filter, the ISO stack, and the AppleTalk stack to rtcache_getrt(). They compile, but I have not tested them. I have given the changes to PF, GRE, IPv4 and IPv6 stacks a lot of exercise.
In case you were wondering why this code is still present: The ISO (or OSI) stack is still in use by many router vendors (e.g., using IS-IS the OSI equivalent of OSPF, to carry IP routes). Chris. chopps@NetBSD.org