fix

files/ppp-macvlan-scripts/pre-up.sh.j2

 #!/bin/bash
 ip link add link {{ppp.link}} dev pppm{{ppp.id}} type macvlan
 ip link set pppm{{ppp.id}} up
-{% if ppp.mac %}}
+{% if ppp.mac %}
 ip link set pppm{{ppp.id}} address {{ppp.mac}}
 {% endif %}