This main goals of this project are:

1. separating L2 tables (ARP, NDP) from the L3 routing tables
2. removing as much locking dependencies among these layers as
   possible to allow for some parallelism in the search operations
3. simplify the logic in the routing code,

The most notable end result is the obsolescent of the route
cloning (RTF_CLONING) concept, which translated into code reduction
in both IPv4 ARP and IPv6 NDP related modules, and size reduction in
struct rtentry{}. The change in design obsoletes the semantics of
RTF_CLONING, RTF_WASCLONE and RTF_LLINFO routing flags. The userland
applications such as "arp" and "ndp" have been modified to reflect
those changes. The output from "netstat -r" shows only the routing
entries.

Quite a few developers have contributed to this project in the
past: Glebius Smirnoff, Luigi Rizzo, Alessandro Cerri, and
Andre Oppermann. And most recently:

- Kip Macy revised the locking code completely, thus completing
  the last piece of the puzzle, Kip has also been conducting
  active functional testing
- Sam Leffler has helped me improving/refactoring the code, and
  provided valuable reviews
- Julian Elischer setup the perforce tree for me and has helped
  me maintaining that branch before the svn conversion

1 files changed, 9 insertions, 0 deletions

diff --git a/UPDATING b/UPDATING
index eefee86981d4..6b48ada42740 100644
--- a/UPDATING
+++ b/UPDATING
@@ -22,6 +22,15 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 8.x IS SLOW:
 	to maximize performance.  (To disable malloc debugging, run
 	ln -s aj /etc/malloc.conf.)
 
+20081214:
+	__FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
+	RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
+	The new code reduced struct rtentry{} by 16 bytes on 32-bit 
+	architecture and 40 bytes on 64-bit architecture. The userland
+	applications "arp" and "ndp" have been updated accordingly.
+	The output from "netstat -r" shows only routing entries and
+	none of the L2 information.
+
 20081130:
 	__FreeBSD_version 800057 marks the switchover from the
 	binary ath hal to source code. Users must add the line: