# File lib/fog/network/openstack/requests/update_ipsec_site_connection.rb, line 5
        def update_ipsec_site_connection(ipsec_site_connection_id, options = {})
          data = {'ipsec_site_connection' => {}}

          vanilla_options = [:name, :description, :tenant_id,
                             :peer_address, :peer_id, :peer_cidrs,
                             :psk, :mtu, :dpd, :initiator,
                             :admin_state_up, :ikepolicy_id,
                             :ipsecpolicy_id, :vpnservice_id]
          vanilla_options.select { |o| options.key?(o) }.each do |key|
            data['ipsec_site_connection'][key] = options[key]
          end

          request(
            :body    => Fog::JSON.encode(data),
            :expects => 200,
            :method  => 'PUT',
            :path    => "vpn/ipsec-site-connections/#{ipsec_site_connection_id}"
          )
        end