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

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.