iodine - http://code.kryo.se/iodine

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CHANGES:

2007-11-30: 0.4.1 "Tea Online"
	- Introduced encoding API
	- Switched to new Base32 implementation
	- Added Base64 implementation that only uses 63 chars (not used yet)
	- Refined 'install' make target and use $(MAKE) for recursive calls
	- All received error messages (RCODE field) are echoed
	- Top domain limited to 128 chars
	- Case preservation check sent after login to decide codec
	- Fixed crash on incoming NULL query in server with bad top domain
	- /etc/resolv.conf is consulted if no nameserver is given on commandline
	- Applied patch from Matthew W. S. Bell (Detach before chroot/dropping priv)

2007-03-25: 0.4.0 "Run Home"
	- Added multiuser support (up to 8 users simultaneously)
	- Added authentication (password entered as argument or on stdin)
	- Added manpage
	- Added install/uninstall make target
	- Cleanup of dns code, more test cases, use check library
	- Changed directory structure

2006-11-08: 0.3.4
	- Fixed handshake() buffer overflow
	  (Found by poplix, Secunia: SA22674 / FrSIRT/ADV-2006-4333)
	- Added more tests
	- More name parsing enhancements
	- Now runs on Linux/AMD64
	- Added setting to change server port

2006-11-05: 0.3.3
	- Fixed possible buffer overflow
	  (Found by poplix, Bugtraq ID: 20883)
	- Reworked dns hostname encoding

2006-09-11: 0.3.2
	- Support for NetBSD
	- Fixed potential security problems
	- Name parsing routines rewritten, added regression tests
	- New encoding, 25% more peak upstream throughput
	- New -l option to set local ip to listen to on server

2006-07-11: 0.3.1 
	- Add Mac OSX support
	- Add setting device name
	- Use compression of domain name in reply (should allow setting MTU 
		approx 200 bytes higher)

2006-06-24: 0.3.0
	- First public release
	- Support for Linux, FreeBSD, OpenBSD