auto {{ bridge_name }}
iface {{ bridge_name }} inet {{ bridge.get('proto', 'static' if bridge.address is defined else 'manual') }}
mtu {{ bridge.get('mtu', '1500') }}
{%- if bridge.address is defined %}
address {{ bridge.address }}
netmask {{ bridge.netmask }}
{%- endif %}
{%- if bridge.gateway is defined %}
gateway {{ bridge.gateway }}
{%- endif %}
{%- if bridge.name_servers is defined %}
dns-nameservers {{ bridge.name_servers|join(' ') }}
{%- endif %}