1.4.0 and 1.4.1 have a fairly serious efficiency bug when built by compilers which do not support ISO C99 vararg macros. If you run ./configure with 1.4.0 or 1.4.1 and you see this line:
checking for ISO C 1999 vararg macro support... no you will be experiencing a significant slowdown due to this bug. A minimal patch is available against 1.4.0 and 1.4.1: http://openvpn.sourceforge.net/patch/isoc99fix.patch Alternatively, you are encouraged to test the first 1.4.2 release candidate which also contains a fix for the ISO C99 vararg bug, as well as: * Removed adaptive bandwidth from --mtu-dynamic -- its absence appears to work better than its existence (1.4.1.2). * Minor changes to --shaper to fix long retransmit timeouts at low bandwidth (1.4.1.2). * Added LOG_RW flag to openvpn.h for debugging (1.4.1.2). * Silenced spurious configure warnings (1.4.1.2). * Backed out --dev-name patch, modified --dev to offer equivalent functionality (1.4.1.4). * Added an optional parameter to --daemon and --inetd to support the passing of a custom program name to the system logger (1.4.1.5). * Add compiled-in options to the program title (1.4.1.5). * Coded the beginnings of a WIN32 port (1.4.1.5). * Succeeded in porting to Win32 Mingw environment and running loopback tests (1.4.1.6). Still need a kernel driver for full Win32 functionality. * Fixed a bug in error.h where HAVE_CPP_VARARG_MACRO_GCC was misspelled. This would have caused a significant slowdown of OpenVPN when built by compilers that lack ISO C99 vararg macros (1.4.1.6). * Created an init script for Gentoo Linux in ./gentoo directory (1.4.1.6). Download the release candidate: http://openvpn.sourceforge.net/beta/openvpn-1.4.1.8.tar.gz Release candidate is also available on CVS (note that sourceforge anonymous CVS is now 24 hour delayed). James
