From afdc5fe92bee26b9c056428e09b08add81a7ba6d Mon Sep 17 00:00:00 2001
From: Niklas Yann Wettengel <niyawe@niyawe.de>
Date: Sun, 16 Jul 2017 13:45:52 +0200
Subject: [PATCH] wireguard_mesh: only run batctl commands if there are peers

---
 roles/install_wireguard_mesh/templates/down.sh.j2 | 2 ++
 roles/install_wireguard_mesh/templates/up.sh.j2   | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/roles/install_wireguard_mesh/templates/down.sh.j2 b/roles/install_wireguard_mesh/templates/down.sh.j2
index 603208b..a1f8d52 100644
--- a/roles/install_wireguard_mesh/templates/down.sh.j2
+++ b/roles/install_wireguard_mesh/templates/down.sh.j2
@@ -1,6 +1,8 @@
 #!/bin/bash
+{% if item.wireguard_mesh_peers %}
 {% for peer in item.wireguard_mesh_peers %}
 batctl -m bat{{ item.name }} if del mesh{{ item.name }}{{ peer.number }}
 ip link set down dev mesh{{ item.name }}{{ peer.number }}
 ip link del mesh{{ item.name }}{{ peer.number }} type ip6gretap
 {% endfor %}
+{% endif %}
diff --git a/roles/install_wireguard_mesh/templates/up.sh.j2 b/roles/install_wireguard_mesh/templates/up.sh.j2
index cdab474..c413685 100644
--- a/roles/install_wireguard_mesh/templates/up.sh.j2
+++ b/roles/install_wireguard_mesh/templates/up.sh.j2
@@ -1,4 +1,5 @@
 #!/bin/bash
+{% if item.wireguard_mesh_peers %}
 {% for peer in item.wireguard_mesh_peers %}
 ip link add mesh{{ item.name }}{{ peer.number }} type ip6gretap remote {{ peer.address }} local {{ item.wireguard_mesh_address }} ttl 255 dev wg{{ item.name }}
 ip link set mtu 1280 dev mesh{{ item.name }}{{ peer.number }}
@@ -13,3 +14,4 @@ echo 64 > /sys/class/net/bat{{ item.name }}/mesh/hop_penalty
 netctl start bat{{ item.name }}
 systemctl restart dhcpd4.service
 systemctl restart named.service
+{% endif %}