<td>17</td>
<td>reserved for FIXME-NAT</td>
<td>DON'T USE!disable</td>
</tr>
<tr bgcolor=LightSlateGrey>
<td>18</td>
<td>reserved for FIXME-PUBLIC</td>
<td>DON'T USE!disable</td>
</tr>
<tr bgcolor=SlateGrey>
<td>19</td>
<td>reserved for FIXME-NAT</td>
<td>DON'T USE!disable</td>
</tr>
<tr bgcolor=LightSlateGrey>
<td>20</td>
<td>reserved for FIXME-PUBLIC</td>
<td>DON'T USE!disable</td>
</tr>
<tr bgcolor=SlateGrey>
<td>21</td>
<td>reserved for FIXME-NAT</td>
<td>DON'T USE!disable</td>
</tr>
<tr bgcolor=LightSlateGrey>
<td>22</td>
<td>reserved for FIXME-PUBLIC</td>
<td>DON'T USE!disable</td>
</tr>
<tr bgcolor=IndianRed>