diff --git a/install/usr/share/swarmlab.io/sec/sec_bootstrap b/install/usr/share/swarmlab.io/sec/sec_bootstrap
index 61bd723..b99105a 100755
--- a/install/usr/share/swarmlab.io/sec/sec_bootstrap
+++ b/install/usr/share/swarmlab.io/sec/sec_bootstrap
@@ -45,6 +45,7 @@ case $ROLE in
 
         # Auto update default host file in background and dumb all output
         auto_update_hosts "${HOSTNAMES}" > /dev/null 2>&1 &
+        tail -f /dev/null
 
         # Start ssh server
         #/usr/sbin/sshd -D
@@ -64,7 +65,7 @@ case $ROLE in
         #    ssh -T -o "StrictHostKeyChecking no"   \
         #        -i "${USER_HOME}/.ssh/id_rsa"      \
         #        ${USER}@${MPI_MASTER_SERVICE_NAME} \
-        #        "tail -f /dev/null"
+        tail -f /dev/null
         #done
         ;;
     *)