Release Notes: This release fixes potential crashes during shutdown and in rare conditions. It improves NAT handling: tinc now copes with mangled port numbers, and will automatically fall back to TCP if direct UDP connection between nodes is not possible. Old RSA keys are disabled when generating new ones, and the default size of new RSA keys has been raised to 2048 bits. There are many fixes in the path MTU discovery code. Tinc can now drop privileges and/or chroot itself. The performance on Windows is improved.
Release Notes: Handling redundant links has been improved by using non-blocking connects and updates to the protocol and graph algorithms. There is good support for tunneling IPv6 packets, and there is also support for creating tunnels over existing IPv6 networks. Packet compression has been added, and tunnels can now inherit the TOS field of the tunneled packets.