ffho-salt-public/network/ifupdown2/reload.sls

#
# network.ifupdown2.reload
#

# Reload interface configuration if neccessary
ifreload:
  cmd.wait:
    - name: /sbin/ifreload -a
    - watch:
      - file: /etc/network/interfaces

# If there is an interface in vrf_external, install a workaround script
# for a bug in ifupdown2 which will sometimes drop an IPv4 default route
# present in the kernel and not reinstall it.
#
# The fix script will be called every minute by cron and after ifreload
# was called to try to minimize any downtime.
{% set vrf = [False] %}
{% for iface, iface_config in salt['pillar.get']('nodes:' ~ grains['id'] ~ ':ifaces', {}).items() %}
  {% if iface_config.get ('vrf', '') == 'vrf_external' %}
    {% do vrf.append (True) %}
    {% break %}
  {% endif %}
{% endfor %}

/usr/local/sbin/ff_fix_default_route:
{% if True in vrf %}
  file.managed:
    - source: salt://network/ifupdown2/ff_fix_default_route
    - mode: 755
  cmd.wait:
    - require:
      - cmd: ifreload
      - file: /usr/local/sbin/ff_fix_default_route
    - watch:
      - file: /etc/network/interfaces
{% else %}
  file.absent
{% endif %}

/etc/cron.d/ff_fix_default_route:
{% if True in vrf %}
  file.managed:
    - source: salt://network/ifupdown2/ff_fix_default_route.cron
    - template: jinja
{% else %}
  file.absent
{% endif %}