+@cindex AddressFamily
+@item AddressFamily = <ipv4|ipv6|any> (ipv4)
+This option affects the address family of listening and outgoing sockets.
+If "any" is selected, then the listening sockets will be IPv6 sockets,
+but on most platforms those will also accept IPv4 connections.
+
+@cindex BindToInterface
+@item BindToInterface = <interface>
+If you have more than one network interface in your computer, tinc will
+by default listen on all of them for incoming connections. It is
+possible to bind tinc to a single interface like eth0 or ppp0 with this
+variable.
+
+This option may not work on all platforms.
+
+@cindex BindToIP
+@item BindToIP = <address>
+If your computer has more than one IP address on a single interface (for
+example if you are running virtual hosts), tinc will by default listen
+on all of them for incoming connections. It is possible to bind tinc to
+a single IP address with this variable. It is still possible to listen
+on several interfaces at the same time though, if they share the same IP
+address.
+
+This option may not work on all platforms.
+