-This version of tinc supports multiple virtual networks at once. To
-use this feature, you may supply a netname via the -n or --net
-options. The standard locations for the config files will then be
-/etc/tinc/<net>/. Because of this feature, tinc will send packets
-directly to their destinations, instead of to the uplink. If this
-behaviour is undesirable (for instance because of firewalls or other
-restrictions), please use an older version of tinc (I would recommend
-tinc-0.2.19).
-
-In order to force the kernel to accept received packets, the
-destination MAC address will be set to FE:FD:00:00:00:00 upon
-reception. The MAC address of the ethertap or tun/tap interface must
-also be set to this address. See the manual for more detailed
-information.
-
-tincd regenerates its encryption key pairs. It does this on the first
-activity after the keys have expired. This period is adjustable in the
-configuration file, and the default time is 3600 seconds (one hour).
-
-This version supports multiple subnets at once. They are also sorted
-on subnet mask size. This means that it is possible to have
-overlapping subnets on the VPN, as long as their subnet mask sizes
-differ.
+Tinc is a peer-to-peer VPN daemon that supports VPNs with an arbitrary number
+of nodes. Instead of configuring tunnels, you give tinc the location and
+public key of a few nodes in the VPN. After making the initial connections to
+those nodes, tinc will learn about all other nodes on the VPN, and will make
+connections automatically. When direct connections are not possible, data will
+be forwarded by intermediate nodes.
+
+By default, nodes authenticate each other using 2048 bit RSA (or 521 bit
+ECDSA*) keys. Traffic is encrypted using Blowfish in CBC mode (or AES-256 in
+GCM mode*), authenticated using HMAC-SHA1 (or GCM*), and is protected against
+replay attacks.
+
+*) When using the ExperimentalProtocol option.
+
+Tinc fully supports IPv6.
+
+Tinc can operate in several routing modes. In the default mode, "router", every
+node is associated with one or more IPv4 and/or IPv6 Subnets. The other two
+modes, "switch" and "hub", let the tinc daemons work together to form a virtual
+Ethernet network switch or hub.
+
+Normally, when started tinc will detach and run in the background. In a native
+Windows environment this means tinc will intall itself as a service, which will
+restart after reboots. To prevent tinc from detaching or running as a service,
+use the -D option.
+
+The status of the VPN can be queried using the "tinc" command, which connects
+to a running tinc daemon via a control connection. The same tool also makes it
+easy to start and stop tinc, and to change its configuration.