updated dhcp conf

isc-dhcp/dhcpd.conf

-ddns-update-style none;
+#Dynamic DNS security settings
+key "dhcpdupdate" { #TODO
+        algorithm hmac-md5;
+        secret "FYhvwsW1ZtFZqWzsMpqhbg==";
+};
 
+zone dhcp.site.rthoni.com {
+    primary 10.15.100.1;
+    key dhcpdupdate;
+}
+
+zone site.rthoni.com {
+    primary 10.15.100.1;
+    key dhcpdupdate;
+}
+
+zone 100.15.10.in-addr.arpa. {
+    primary 10.15.100.1;
+    key dhcpdupdate;
+}
+
+
+# Custom routes classes
 option classless-routes code 121 = array of unsigned integer 8;
 option classless-routes-win code 249 = array of unsigned integer 8;
 
+# Leases settings
 default-lease-time 600;
 max-lease-time 7200;
 
+# Misc settings
 use-host-decl-names on;
-
 authoritative;
-
 log-facility local7;
 
 subnet 10.15.100.0 netmask 255.255.255.0 {
 
+  # Dynamic DNS update
+  ddns-updates off; #TODO
+  ddns-update-style interim;
+  update-static-leases off;
+  ddns-domainname "dhcp.site.rthoni.com";
+  ddns-rev-domainname "100.15.10.in-addr.arpa.";
+
+
   # IP settings
   range 10.15.100.50 10.15.100.250;
   option subnet-mask 255.255.255.0;
   else {
     filename "ipxe-rthoni.kpxe";
   }
+
+  # Static IP hosts
+  group {
+    ddns-domainname "site.rthoni.com";
+  }
 }