<div dir="ltr"><div dir="ltr">Hi Francis,<div><br></div><div>I am not looking for subnet selection but for pool selection inside the same subnet </div><div>I already tried with 

require-client-classes  and  

client-class  but the results are the same  <br>Please see the configuration bellow</div><div><br></div><div>Thanks</div><div><br></div><div>Nitzan</div><div><br></div><div>BTW the certificate for <a href="http://lists.isc.org">lists.isc.org</a> expired at Dec 30 2018 and chrome does not let users to see the site </div><div><br></div><div><div><br></div><div>    "client-classes": [</div><div>        {</div><div>            "name": "Internet",</div><div>            "only-if-required": true,</div><div>            "test": "member('ALL')"</div><div>        },</div><div>        {</div><div>            "name": "Internet_Class",</div><div>            "test": "member('KNOWN') and member('Internet')"</div><div>        },</div><div>        {</div><div>            "name": "NO_CLASS",</div><div>            "test": "member('KNOWN') and not member('Internet')"</div><div>        },</div><div>        {</div><div>            "name": "NOT_KNOWN",</div><div>            "test": "member('UNKNOWN')"</div><div>        }</div><div>    ],</div><div><br></div><div><br></div><div>    "subnet4": [</div><div>        {</div><div>            "subnet": "<a href="http://10.22.131.0/24">10.22.131.0/24</a>",</div><div>            "authoritative": true,</div><div>            "renew-timer": 30,</div><div>            "rebind-timer": 45,</div><div>            "valid-lifetime": 90,</div><div>            "pools": [ </div><div>                     { </div><div>                       "pool": "10.22.131.110 - 10.22.131.190",</div><div>                       "client-class": "NO_CLASS" </div><div>                     },</div><div>                     {</div><div>                       "pool": "10.22.131.10 - 10.22.131.90",</div><div>                       "require-client-classes": [ "Internet_Class" ]</div><div>                     },</div><div>                     {</div><div>                       "pool": "10.22.131.200 - 10.22.131.220",</div><div>                       "client-class": "NOT_KNOWN" </div><div>                     }</div><div>             ],</div><div><br></div><div>            "option-data": [</div><div>                {</div><div>                    "name": "routers",</div><div>                    "data": "10.22.131.200"</div><div>                }</div><div>            ],</div><div>        }</div><div>    ]</div><div><br></div><div>}</div></div></div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Jan 1, 2019 at 3:26 PM Francis Dupont <<a href="mailto:fdupont@isc.org">fdupont@isc.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">A priori it is not possible because the host reservation lookup is done<br>
after the subnet selection.<br>
<br>
Regards<br>
<br>
Francis Dupont <<a href="mailto:fdupont@isc.org" target="_blank">fdupont@isc.org</a>><br>
</blockquote></div>