Allow environment variables to be used for Name.

[tinc] / doc / tinc.texi

diff --git a/doc/tinc.texi b/doc/tinc.texi
index d0fb70d..84e3495 100644 (file)
--- a/doc/tinc.texi
+++ b/doc/tinc.texi
@@ -993,6 +993,11 @@ This only has effect when Mode is set to "switch".
 This is a symbolic name for this connection.
 The name should consist only of alfanumeric and underscore characters (a-z, A-Z, 0-9 and _).
 
+If Name starts with a $, then the contents of the environment variable that follows will be used.
+In that case, invalid characters will be converted to underscores.
+If Name is $HOST, but no such environment variable exist,
+the hostname will be read using the gethostnname() system call.
+
 @cindex PingInterval
 @item PingInterval = <@var{seconds}> (60)
 The number of seconds of inactivity that tinc will wait before sending a