{% set bridge_name = 'br-'+item.key %}
{% set bridge = item.value %}
{% set interface = (network.interfaces | selectattr('name', 'eq', bridge_name) | first | default({})) %}
auto {{ bridge_name }}
{% if 'address' in interface %}
iface {{ bridge_name }} inet static
  address {{ interface.address | ipaddr('address') }}
  netmask {{ interface.address | ipaddr('netmask') }}
{%   if 'gateway' in interface %}
  gateway {{ interface.gateway }}
{%   endif %}
{% else %}
iface {{ bridge_name }} inet manual
{% endif %}
{% if 'interfaces' in bridge and (bridge.interfaces | length) > 0 %}
  bridge_ports {{ bridge.interfaces | join(' ') }}
{% else %}
  bridge_ports none
{% endif %}
  bridge_stp off
  bridge_waitport 0
  bridge_fd 0
  up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/accept_ra
  up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/autoconf
  up modprobe br_netfilter
  up /sbin/sysctl net.bridge.bridge-nf-call-iptables=0
  up /sbin/sysctl net.bridge.bridge-nf-call-ip6tables=0
  up /sbin/sysctl net.bridge.bridge-nf-call-arptables=0
{% if 'address' in interface and 'prefix' in bridge %}
{%   if 'nat' in bridge and bridge.nat %}
  up echo 1 > /proc/sys/net/ipv4/conf/$IFACE/forwarding
  up echo 1 > /proc/sys/net/ipv4/conf/{{ ansible_default_ipv4.interface }}/forwarding
  up /sbin/iptables -t nat -A POSTROUTING -o {{ ansible_default_ipv4.interface }} -s {{ bridge.prefix }} -j SNAT --to {{ ansible_default_ipv4.address }}
{%   endif %}
{%   for overlay_name in (bridge.overlays | default({}) | list | sort) %}
{%     set overlay = bridge.overlays[overlay_name] %}
{%     for dest, offset in (overlay.offsets | dictsort(by='value')) %}
  up /bin/ip route add {{ (overlay.prefix | ipaddr(offset)).split('/')[0] }}/32 via {{ (bridge.prefix | ipaddr(bridge.offsets[dest])).split('/')[0] }}  # {{ dest }}
{%     endfor %}
  up /bin/ip route add unreachable {{ overlay.prefix }}
  down /sbin/ip route del {{ overlay.prefix }}
{%   endfor %}
{%   if 'nat' in bridge and bridge.nat %}
  down /sbin/iptables -t nat -D POSTROUTING -o {{ ansible_default_ipv4.interface }} -s {{ bridge.prefix }} -j SNAT --to {{ ansible_default_ipv4.address }}
{%   endif %}
{% endif %}
{% if 'address6' in interface %}

iface {{ bridge_name }} inet6 static
  address {{ interface.address6 }}
{%   if 'gateway6' in interface %}
  gateway {{ interface.gateway6 }}
{%   endif %}
{% endif %}