Release Notes: Groups are now cleared when dropping privileges. Many small patches have been applied. UDP ports are no longer checked, so users behind NAT should not have any problems. This was also needed because most DNS servers are now fixed to randomize ports.
Release Notes: Support for NetBSD. Potential security problems have been fixed. Name parsing routines have been rewritten. Regression tests have been added. There is a new encoding with 25% more peak upstream throughput. There is a new -l option to set a local IP to listen to on a server.
Release Notes: Mac OS X support was added. The ability to set device name was added. The domain name is compressed in the reply, which should allow setting MTU to about 200 bytes higher.