# File lib/fog/openstack/requests/network/associate_floating_ip.rb, line 6
        def associate_floating_ip(floating_ip_id, port_id, options = {})
          data = {
            'floating_ip' => {
              'port_id'    => port_id,
            }
          }

          vanilla_options = [:fixed_ip_address]
          vanilla_options.reject{ |o| options[o].nil? }.each do |key|
            data['floating_ip'][key] = options[key]
          end

          request(
            :body     => Fog::JSON.encode(data),
            :expects  => [200],
            :method   => 'PUT',
            :path     => "floatingips/#{floating_ip_id}"
          )
        end