diff --git a/roles/mesh-interfaces/templates/mesh.conf.j2 b/roles/mesh-interfaces/templates/mesh.conf.j2
index b4239d4..0deb84c 100644
--- a/roles/mesh-interfaces/templates/mesh.conf.j2
+++ b/roles/mesh-interfaces/templates/mesh.conf.j2
@@ -25,6 +25,9 @@ iface bat-{{ site_code }}
 	batman-ifaces		dmy-{{ site_code }}
 	batman-ifaces-ignore-regex	.*_.*
 	#
+	# TODO use batman-xyz instead of batctl
+	# see /usr/share/ifupdown2/addons/batman_adv.py
+	#
 	up /usr/sbin/batctl -m bat-{{ site_code }} gw_mode server 100000 100000
 	up /usr/sbin/batctl -m bat-{{ site_code }} it 5000
 	up /usr/sbin/batctl -m bat-{{ site_code }} multicast_mode 0