Release Notes: Compatibility with older versions and newer LZO libraries was improved.
Release Notes: LZO2 compatibility was improved.
Release Notes: Encryption fixes include improved challenge generation and a padding check. The config parser was fixed to disallow empty passwords. A config option to specify syslog logging facility was added. Support for the new Linux TUN/TAP driver was added. I/O (read_n/write_n) cancellation was added. Signal handling and other minor fixes were made. The Makefile was improved, and the documentation was updated.