diff -up sane-backends-1.0.24/doc/saned.man.saned-manpage sane-backends-1.0.24/doc/saned.man
--- sane-backends-1.0.24/doc/saned.man.saned-manpage	2017-11-22 15:53:48.268950048 +0100
+++ sane-backends-1.0.24/doc/saned.man	2017-11-22 16:19:08.411273673 +0100
@@ -274,6 +274,20 @@ systemd allows debugging output from bac
 .B SANE_DEBUG_<backend_name> 
 to be captured. With the service unit as described above, the debugging output is 
 forwarded to the system log.
+
+After creating unit files run as root:
+.PP
+.RS
+systemctl start saned.socket
+.RE
+.PP
+to start saned. If you want to have saned.socket running after startup, run as
+root: 
+.PP
+.RS
+systemctl enable saned.socket
+.RE
+.PP
 .SH FILES
 .TP
 .I /etc/hosts.equiv