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Here is the ChangeLog entry:

Version 4.06, 2004.12.26, urgency: LOW: * New feature sponsored by SURFnet http://www.surfnet.nl/ - IPv6 support (to be enabled with ./configure --enable-ipv6). * New features - poll() support - no more FD_SETSIZE limit! - Multiple connect=host:port options are allowed in a single service section. Remote hosts are connected using round-robin algorithm. This feature is not compatible with delayed resolver. - New 'compression' option to enable compression. To use zlib algorithm you have to enable it when building OpenSSL library. - New 'engine' option to select a hardware engine. - New 'TIMEOUTconnect' option with 10 seconds default added. - stunnel3 perl script to emulate version 3.x command line options. - French manual updated by Bernard Choppy <choppy AT free POINT fr>. - A watchdog to detect transfer() infinite loops added. - Configuration file comment character changed from '#' to ';'. '#' will still be recognized to keep compatibility. - MT-safe getaddrinfo() and getnameinfo() are used where available to get better performance on resolver calls. - Automake upgraded from 1.4-p4 to 1.7.9. * Bugfixes - log() changed to s_log() to avoid conflicts on some systems. - Common CRIT_INET critical section introduced instead of separate CRIT_NTOA and CRIT_RESOLVER to avoid potential problems with libwrap (TCP Wrappers) library. - CreateThread() finally replaced with _beginthread() on Win32. - make install creates $(localstatedir)/stunnel. $(localstatedir)/stunnel/dev/zero is also created on Solaris. - Race condition with client session cache fixed. - Other minor bugfixes. * Release notes - Win32 port requires Winsock2 to work. Some Win95 systems may need a free update from Microsoft. http://www.microsoft.com/windows95/downloads/ - Default is *not* to use IPv6 '::' for accept and '::1' for connect. For example to accept pop3s on IPv6 you could use: 'accept = :::995'. I hope the new syntax is clear enough.

Homepage: http://stunnel.mirt.net/ Download: ftp://stunnel.mirt.net/stunnel/

Best regards, Mike