EOF
# Update /etc/collectd.conf
-echo "include \"/etc/collectd.vpn\"" >> /etc/collectd.conf
+if ! grep -q "collectd.vpn" /etc/collectd.conf; then
+ echo "include \"/etc/collectd.vpn\"" >> /etc/collectd.conf
+fi
# Generate ddns configuration file
sudo -u nobody /srv/web/ipfire/cgi-bin/ddns.cgi