Customize.md

@@ -108,6 +108,9 @@ Then do a
 
 `bbb-conf --restart`
 
+After each update do a
+
+`bbb-conf --setip arlberg.fairteaching.net` see https://docs.bigbluebutton.org/2.2/install.html#upgrading-from-bigbluebutton-22
 
 (For future: a script might do that job: https://docs.bigbluebutton.org/2.2/customize.html#automatically-apply-configuration-changes-on-restart)