diff -r 416f4d031afd -r 47e03cb99274 etc/options
--- a/etc/options	Thu Oct 20 16:29:02 2016 +0200
+++ b/etc/options	Thu Oct 20 23:05:13 2016 +0200
@@ -206,3 +206,6 @@
 
 option ssh_connect_timeout : real = 60
   -- "SSH connection timeout (seconds)"
+
+option ssh_alive_interval : real = 30
+  -- "time interval to keep SSH server connection alive (seconds)"