fd_device: allow fd to be passed through a unix socket

[tinc] / doc / tinc.conf.5.in

diff --git a/doc/tinc.conf.5.in b/doc/tinc.conf.5.in
index a907e5f..acdce0f 100644 (file)
--- a/doc/tinc.conf.5.in
+++ b/doc/tinc.conf.5.in
@@ -235,7 +235,8 @@ Do NOT connect multiple
 daemons to the same multicast address, this will very likely cause routing loops.
 Also note that this can cause decrypted VPN packets to be sent out on a real network if misconfigured.
 .It fd
-Use a file descriptor.
+Use a file descriptor, given directly as an integer or passed through a unix domain socket.
+On Linux, an abstract socket address can be specified by using "@" as a prefix.
 All packets are read from this interface.
 Packets received for the local node are written to it.
 .It uml Pq not compiled in by default