pillar.txt

With Pillar data that looks like:
vlans:
  id:
    100:
    network:
      - 10.20.0.0
    netmask:
      - 255.255.255.0
    prefix:
      - 10.20.0
    gateway:
      - 10.20.0.1
  id:
    101:
  network:
    - 10.21.0.0
  netmask:
    - 255.255.255.0
  prefix:
    - 10.21.0
  gateway:
    - 10.21.0.1

What does this become:
{%- for vlan in grains.vlans %}
subnet {{ vlan.network }} netmask {{ vlan.netmask }} {
       option routers                  {{ vlan.gateway }};
       option subnet-mask              {{ vlan.netmask }};
       range {{ vlan.prefix }}.200 {{ vlan.prefix }}.240;
       default-lease-time 1200;
       max-lease-time 2400;
}
{%- endfor %}