4       def interfaces(role: nil)
 
   5         networking = construct_attributes[:networking] || {}
 
   6         networking_interfaces = networking[:interfaces] || {}
 
   8         networking_interfaces.each_value.select do |interface|
 
   9           role.nil? || interface[:role].to_s == role.to_s
 
  16 Chef::Node.include(OpenStreetMap::Mixin::Interfaces)