+@cindex AddressFamily
+@item AddressFamily = <ipv4|ipv6|any> (ipv4) [experimental]
+This option affects the address family of listening and outgoing sockets.
+If "any" is selected, then depending on the operating system
+both IPv4 and IPv6 or just IPv6 listening sockets will be created.
+
+Mixing IPv4 and IPv6 may not work as desired.
+It's best to choose one address family
+and use that for all tinc daemons on the VPN.
+