# File lib/fog/openstack/requests/network/update_subnet.rb, line 6
        def update_subnet(subnet_id, options = {})
          data = { 'subnet' => {} }

          vanilla_options = [:name, :gateway_ip, :dns_nameservers,
                             :host_routes, :enable_dhcp]
          vanilla_options.select{ |o| options.has_key?(o) }.each do |key|
            data['subnet'][key] = options[key]
          end

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