routed previousely ignored local routes, which have RTF_LOCAL flag, because
such routes have RTF_LLINFO and routed ignored routes having the flag. When
we obsoleted RTF_LLINFO, we removed the ignoring logic from routed, then
routed started removing local routes unexpectedly.
Fix this behavior by teaching local routes to routed to ignore them.
kardel@ reported the issue and helped testing, thanks!
By this change, nexthop caches (IP-MAC address pair) are not stored
in the routing table anymore. Instead nexthop caches are stored in
each network interface; we already have lltable/llentry data structure
for this purpose. This change also obsoletes the concept of cloning/cloned
routes. Cloned routes no longer exist while cloning routes still exist
with renamed to connected routes.
Noticeable changes are:
- Nexthop caches aren't listed in route show/netstat -r
- sysctl(NET_RT_DUMP) doesn't return them
- If RTF_LLDATA is specified, it returns nexthop caches
- Several definitions of routing flags and messages are removed
- RTF_CLONING, RTF_XRESOLVE, RTF_LLINFO, RTF_CLONED and RTM_RESOLVE
- RTF_CONNECTED is added
- It has the same value of RTF_CLONING for backward compatibility
- route's -xresolve, -[no]cloned and -llinfo options are removed
- -[no]cloning remains because it seems there are users
- -[no]connected is introduced and recommended
to be used instead of -[no]cloning
- route show/netstat -r drops some flags
- 'L' and 'c' are not seen anymore
- 'C' now indicates a connected route
- Gateway value of a route of an interface address is now not
a L2 address but "link#N" like a connected (cloning) route
- Proxy ARP: "arp -s ... pub" doesn't create a route
You can know details of behavior changes by seeing diffs under tests/.
Proposed on tech-net and tech-kern:
http://mail-index.netbsd.org/tech-net/2016/03/11/msg005701.html
The most significant [fix] involves so called "remote" interfaces
configured in the kludge file to with what appear to be colliding
networks. Edward Mascarenhas <eddiem@vihar.engr.sgi.com> found
the problem and the fix, and I think has tested it in the SGI
network.
- Add some prototypes and definitions for types as necessary,
wrapped in __NetBSD__ to maintain portability.
- Explicit size types in structures that go out the wire.
- RCS id police.
