1.7.1 (2014-01-28) - Drop Capsicum configure option so that users do not enable it by mistake. The current u6rd does not work with Capsicum. 1.7 (2014-01-19) - Support for Capsicum capability framework. 1.6 (2013-06-19) - The IPv6 Traffic Class field is copied to the IPv4 Type of Service field. 1.5 (2013-01-12) - Fixed a compilation error on Mac OS X (broken in version 1.4). No update is needed for other operating systems. 1.4 (2012-11-26) - Prefix lengths given in the command line are parsed more strictly. 1.3 (2012-04-12) - Support 6rd prefix length that is not a multiple of 8. - Support embedding a part of an IPv4 address (-r option). - Fix to compile on Mac OS X (not yet tested whether it works properly). 1.2 (2012-03-27) - Use autoconf. - Fix compilation on OpenBSD. 1.1 (2012-03-18) - The first stable version. - Packet counts are written to syslog on SIGINFO. - The MTU of the tun interface is set to 1280 by the daemon. 0.20120310 (2012-03-10) - The first public and alpha version.