Integrating ISC-DHCP with/ Bind (and eventually Kea)
Mark Andrews
marka at isc.org
Mon Dec 1 21:58:11 UTC 2025
Almost certainly this will be a clash between the existing automatic empty zone and
the 'rndc addzone' for 168.192.in-addr.arpa. The long term fix will be to have named
check if the added zone is an automatic empty zone and to allow 'rndc addzone’ to
replace it. In the mean time I would just add 168.192.in-addr.arpa to named.conf or add
'disable-empty-zone 168.192.in-addr.arpa;’
Mark
> On 2 Dec 2025, at 07:50, Philip Prindeville via bind-users <bind-users at lists.isc.org> wrote:
>
> [ Bcc: David and Noah ]
>
> Hi,
>
> I’m the maintainer for Kea and ISC-DHCP on OpenWRT. The scripting to take the UCI configuration files for DHCP and mangle them into Bind zone transfers is here:
>
> https://github.com/openwrt/packages/blob/master/net/isc-dhcp/files/dhcpd.init#L136-L186
> https://github.com/openwrt/packages/blob/master/net/isc-dhcp/files/dhcpd.init#L274
> https://github.com/openwrt/packages/blob/master/net/isc-dhcp/files/dhcpd.init#L276
>
> https://github.com/openwrt/packages/blob/master/net/isc-dhcp/files/dhcpd.init#L569
> https://github.com/openwrt/packages/blob/master/net/isc-dhcp/files/dhcpd.init#L575
>
> https://github.com/openwrt/packages/blob/master/net/isc-dhcp/files/dhcpd.init#L581-L606
> https://github.com/openwrt/packages/blob/master/net/isc-dhcp/files/dhcpd.init#L694
>
> and the glue in Bind is here:
>
> https://github.com/openwrt/packages/blob/master/net/bind/files/bind/named.conf#L8-L9
>
> An example is running locally here, where I have “redfish-solutions.com <http://redfish-solutions.com/>” and “168.192.in-addr.arpa” as the domains I serve.
>
> ; Generated by /etc/init.d/dhcpd at Mon Dec 1 13:14:10 MST 2025
>
> ttl 3600
>
> update add Bedroom.redfish-solutions.com. IN A 192.168.5.5
> send
> update add 5.5.168.192.in-addr.arpa. IN PTR Bedroom.redfish-solutions.com.
> send
> update add Penthouse.redfish-solutions.com. IN A 192.168.5.6
> send
> update add 6.5.168.192.in-addr.arpa. IN PTR Penthouse.redfish-solutions.com.
> send
> update add switch1.redfish-solutions.com. IN A 192.168.6.3
> send
> update add 3.6.168.192.in-addr.arpa. IN PTR switch1.redfish-solutions.com.
> send
> update add usw-24-poe.redfish-solutions.com. IN A 192.168.6.4
> send
> update add 4.6.168.192.in-addr.arpa. IN PTR usw-24-poe.redfish-solutions.com.
> send
> update add usw-aggregation.redfish-solutions.com. IN A 192.168.6.5
> send
> update add 5.6.168.192.in-addr.arpa. IN PTR usw-aggregation.redfish-solutions.com.
> send
> update add uap-ac-pro-upstairs.redfish-solutions.com. IN A 192.168.6.6
> send
> update add 6.6.168.192.in-addr.arpa. IN PTR uap-ac-pro-upstairs.redfish-solutions.com.
> send
> update add uap-u6-lr-mainfloor.redfish-solutions.com. IN A 192.168.6.7
> send
> update add 7.6.168.192.in-addr.arpa. IN PTR uap-u6-lr-mainfloor.redfish-solutions.com.
> send
> update add uap-ac-pro-basement.redfish-solutions.com. IN A 192.168.6.8
> send
> update add 8.6.168.192.in-addr.arpa. IN PTR uap-ac-pro-basement.redfish-solutions.com.
> send
> update add bluray3d.redfish-solutions.com. IN A 192.168.6.13
> send
> update add 13.6.168.192.in-addr.arpa. IN PTR bluray3d.redfish-solutions.com.
> send
> update add bluray.redfish-solutions.com. IN A 192.168.6.14
> send
> update add 14.6.168.192.in-addr.arpa. IN PTR bluray.redfish-solutions.com.
> send
> update add macbook3.redfish-solutions.com. IN A 192.168.6.17
> send
> update add 17.6.168.192.in-addr.arpa. IN PTR macbook3.redfish-solutions.com.
> send
> update add charlottes-iwatch.redfish-solutions.com. IN A 192.168.6.18
> send
> update add 18.6.168.192.in-addr.arpa. IN PTR charlottes-iwatch.redfish-solutions.com.
> send
> update add kuiper-macbookpro.redfish-solutions.com. IN A 192.168.6.19
> send
> update add 19.6.168.192.in-addr.arpa. IN PTR kuiper-macbookpro.redfish-solutions.com.
> send
> update add iphone16-philip.redfish-solutions.com. IN A 192.168.6.20
> send
> update add 20.6.168.192.in-addr.arpa. IN PTR iphone16-philip.redfish-solutions.com.
> send
> update add iwatch-emily.redfish-solutions.com. IN A 192.168.6.22
> send
> update add 22.6.168.192.in-addr.arpa. IN PTR iwatch-emily.redfish-solutions.com.
> send
> update add lucs-laptop.redfish-solutions.com. IN A 192.168.6.23
> send
> update add 23.6.168.192.in-addr.arpa. IN PTR lucs-laptop.redfish-solutions.com.
> send
> update add queenies-switch.redfish-solutions.com. IN A 192.168.6.24
> send
> update add 24.6.168.192.in-addr.arpa. IN PTR queenies-switch.redfish-solutions.com.
> send
> update add queenies-switch-lite.redfish-solutions.com. IN A 192.168.6.25
> send
> update add 25.6.168.192.in-addr.arpa. IN PTR queenies-switch-lite.redfish-solutions.com.
> send
> update add sony-ps4.redfish-solutions.com. IN A 192.168.6.26
> send
> update add 26.6.168.192.in-addr.arpa. IN PTR sony-ps4.redfish-solutions.com.
> send
> update add Lucs-iPhone.redfish-solutions.com. IN A 192.168.6.27
> send
> update add 27.6.168.192.in-addr.arpa. IN PTR Lucs-iPhone.redfish-solutions.com.
> send
> update add fire-blue.redfish-solutions.com. IN A 192.168.6.28
> send
> update add 28.6.168.192.in-addr.arpa. IN PTR fire-blue.redfish-solutions.com.
> send
> update add fire-purple.redfish-solutions.com. IN A 192.168.6.29
> send
> update add 29.6.168.192.in-addr.arpa. IN PTR fire-purple.redfish-solutions.com.
> send
> update add lucs-ipad-air.redfish-solutions.com. IN A 192.168.6.30
> send
> update add 30.6.168.192.in-addr.arpa. IN PTR lucs-ipad-air.redfish-solutions.com.
> send
> update add philips-echo.redfish-solutions.com. IN A 192.168.6.31
> send
> update add 31.6.168.192.in-addr.arpa. IN PTR philips-echo.redfish-solutions.com.
> send
> update add penthouse-kitchen-echo.redfish-solutions.com. IN A 192.168.6.32
> send
> update add 32.6.168.192.in-addr.arpa. IN PTR penthouse-kitchen-echo.redfish-solutions.com.
> send
> update add kitchen-echo.redfish-solutions.com. IN A 192.168.6.33
> send
> update add 33.6.168.192.in-addr.arpa. IN PTR kitchen-echo.redfish-solutions.com.
> send
> update add lucs-echo-dot.redfish-solutions.com. IN A 192.168.6.34
> send
> update add 34.6.168.192.in-addr.arpa. IN PTR lucs-echo-dot.redfish-solutions.com.
> send
> update add penthouse-bedroom-echo-dot.redfish-solutions.com. IN A 192.168.6.35
> send
> update add 35.6.168.192.in-addr.arpa. IN PTR penthouse-bedroom-echo-dot.redfish-solutions.com.
> send
> update add iphone16-emily.redfish-solutions.com. IN A 192.168.6.36
> send
> update add 36.6.168.192.in-addr.arpa. IN PTR iphone16-emily.redfish-solutions.com.
> send
> update add emilys-laptop.redfish-solutions.com. IN A 192.168.6.37
> send
> update add 37.6.168.192.in-addr.arpa. IN PTR emilys-laptop.redfish-solutions.com.
> send
> update add redfish5.redfish-solutions.com. IN A 192.168.6.38
> send
> update add 38.6.168.192.in-addr.arpa. IN PTR redfish5.redfish-solutions.com.
> send
> update add macmini2-wifi.redfish-solutions.com. IN A 192.168.6.39
> send
> update add 39.6.168.192.in-addr.arpa. IN PTR macmini2-wifi.redfish-solutions.com.
> send
> update add fire-purple2.redfish-solutions.com. IN A 192.168.6.40
> send
> update add 40.6.168.192.in-addr.arpa. IN PTR fire-purple2.redfish-solutions.com.
> send
> update add LAPTOP-8PUDRPSI.redfish-solutions.com. IN A 192.168.6.41
> send
> update add 41.6.168.192.in-addr.arpa. IN PTR LAPTOP-8PUDRPSI.redfish-solutions.com.
> send
> update add aquent-surface-wired.redfish-solutions.com. IN A 192.168.6.42
> send
> update add 42.6.168.192.in-addr.arpa. IN PTR aquent-surface-wired.redfish-solutions.com.
> send
> update add emilys-ipad-pro.redfish-solutions.com. IN A 192.168.6.43
> send
> update add 43.6.168.192.in-addr.arpa. IN PTR emilys-ipad-pro.redfish-solutions.com.
> send
> update add Emilys-MBP-2.redfish-solutions.com. IN A 192.168.6.44
> send
> update add 44.6.168.192.in-addr.arpa. IN PTR Emilys-MBP-2.redfish-solutions.com.
> send
> update add mycloud2.redfish-solutions.com. IN A 192.168.6.45
> send
> update add 45.6.168.192.in-addr.arpa. IN PTR mycloud2.redfish-solutions.com.
> send
> update add epson3b6659.redfish-solutions.com. IN A 192.168.6.46
> send
> update add 46.6.168.192.in-addr.arpa. IN PTR epson3b6659.redfish-solutions.com.
> send
> update add switch4.redfish-solutions.com. IN A 192.168.6.47
> send
> update add 47.6.168.192.in-addr.arpa. IN PTR switch4.redfish-solutions.com.
> send
> update add un32h5500.redfish-solutions.com. IN A 192.168.6.48
> send
> update add 48.6.168.192.in-addr.arpa. IN PTR un32h5500.redfish-solutions.com.
> send
> update add un55ju6400.redfish-solutions.com. IN A 192.168.6.49
> send
> update add 49.6.168.192.in-addr.arpa. IN PTR un55ju6400.redfish-solutions.com.
> send
> update add un60d8000.redfish-solutions.com. IN A 192.168.6.50
> send
> update add 50.6.168.192.in-addr.arpa. IN PTR un60d8000.redfish-solutions.com.
> send
> update add lg-65c7.redfish-solutions.com. IN A 192.168.6.51
> send
> update add 51.6.168.192.in-addr.arpa. IN PTR lg-65c7.redfish-solutions.com.
> send
> update add lucs-chromebook.redfish-solutions.com. IN A 192.168.6.52
> send
> update add 52.6.168.192.in-addr.arpa. IN PTR lucs-chromebook.redfish-solutions.com.
> send
> update add lucs-switch.redfish-solutions.com. IN A 192.168.6.53
> send
> update add 53.6.168.192.in-addr.arpa. IN PTR lucs-switch.redfish-solutions.com.
> send
> update add helper-shark.redfish-solutions.com. IN A 192.168.6.54
> send
> update add 54.6.168.192.in-addr.arpa. IN PTR helper-shark.redfish-solutions.com.
> send
> update add lucs-iwatch.redfish-solutions.com. IN A 192.168.6.55
> send
> update add 55.6.168.192.in-addr.arpa. IN PTR lucs-iwatch.redfish-solutions.com.
> send
> update add emilys-dock.redfish-solutions.com. IN A 192.168.6.56
> send
> update add 56.6.168.192.in-addr.arpa. IN PTR emilys-dock.redfish-solutions.com.
> send
> update add anker-dongle.redfish-solutions.com. IN A 192.168.6.57
> send
> update add 57.6.168.192.in-addr.arpa. IN PTR anker-dongle.redfish-solutions.com.
> send
> update add ubuntu20-04.redfish-solutions.com. IN A 192.168.6.64
> send
> update add 64.6.168.192.in-addr.arpa. IN PTR ubuntu20-04.redfish-solutions.com.
> send
> update add centos8S.redfish-solutions.com. IN A 192.168.6.65
> send
> update add 65.6.168.192.in-addr.arpa. IN PTR centos8S.redfish-solutions.com.
> send
> update add ghostbsd.redfish-solutions.com. IN A 192.168.6.66
> send
> update add 66.6.168.192.in-addr.arpa. IN PTR ghostbsd.redfish-solutions.com.
> send
> update add slingsgot-g01-SEC504.redfish-solutions.com. IN A 192.168.6.97
> send
> update add 97.6.168.192.in-addr.arpa. IN PTR slingsgot-g01-SEC504.redfish-solutions.com.
> send
> update add mystery-device.redfish-solutions.com. IN A 192.168.6.99
> send
> update add 99.6.168.192.in-addr.arpa. IN PTR mystery-device.redfish-solutions.com.
> send
> update add diningroom-dimmer1.redfish-solutions.com. IN A 192.168.6.208
> send
> update add 208.6.168.192.in-addr.arpa. IN PTR diningroom-dimmer1.redfish-solutions.com.
> send
> update add diningroom-dimmer2.redfish-solutions.com. IN A 192.168.6.209
> send
> update add 209.6.168.192.in-addr.arpa. IN PTR diningroom-dimmer2.redfish-solutions.com.
> send
> update add kitchen-dimmer1.redfish-solutions.com. IN A 192.168.6.210
> send
> update add 210.6.168.192.in-addr.arpa. IN PTR kitchen-dimmer1.redfish-solutions.com.
> send
> update add island-dimmer1.redfish-solutions.com. IN A 192.168.6.211
> send
> update add 211.6.168.192.in-addr.arpa. IN PTR island-dimmer1.redfish-solutions.com.
> send
> update add nook-dimmer1.redfish-solutions.com. IN A 192.168.6.212
> send
> update add 212.6.168.192.in-addr.arpa. IN PTR nook-dimmer1.redfish-solutions.com.
> send
> update add penthouse-kitchen-dimmer1.redfish-solutions.com. IN A 192.168.6.213
> send
> update add 213.6.168.192.in-addr.arpa. IN PTR penthouse-kitchen-dimmer1.redfish-solutions.com.
> send
> update add penthouse-livingroom-dimmer1.redfish-solutions.com. IN A 192.168.6.214
> send
> update add 214.6.168.192.in-addr.arpa. IN PTR penthouse-livingroom-dimmer1.redfish-solutions.com.
> send
> update add penthouse-livingroom-dimmer2.redfish-solutions.com. IN A 192.168.6.215
> send
> update add 215.6.168.192.in-addr.arpa. IN PTR penthouse-livingroom-dimmer2.redfish-solutions.com.
> send
> update add mainfloor-thermostat.redfish-solutions.com. IN A 192.168.6.216
> send
> update add 216.6.168.192.in-addr.arpa. IN PTR mainfloor-thermostat.redfish-solutions.com.
> send
> update add basement-thermostat.redfish-solutions.com. IN A 192.168.6.217
> send
> update add 217.6.168.192.in-addr.arpa. IN PTR basement-thermostat.redfish-solutions.com.
> send
> update add christmas-lights-switch.redfish-solutions.com. IN A 192.168.6.218
> send
> update add 218.6.168.192.in-addr.arpa. IN PTR christmas-lights-switch.redfish-solutions.com.
> send
> update add penthouse-bedroom-thermostat.redfish-solutions.com. IN A 192.168.6.219
> send
> update add 219.6.168.192.in-addr.arpa. IN PTR penthouse-bedroom-thermostat.redfish-solutions.com.
> send
> update add balcony-switch.redfish-solutions.com. IN A 192.168.6.220
> send
> update add 220.6.168.192.in-addr.arpa. IN PTR balcony-switch.redfish-solutions.com.
> send
> update add front-porch-switch.redfish-solutions.com. IN A 192.168.6.221
> send
> update add 221.6.168.192.in-addr.arpa. IN PTR front-porch-switch.redfish-solutions.com.
> send
> update add back-porch-switch.redfish-solutions.com. IN A 192.168.6.222
> send
> update add 222.6.168.192.in-addr.arpa. IN PTR back-porch-switch.redfish-solutions.com.
> send
> update add emilys-refrigerator.redfish-solutions.com. IN A 192.168.6.223
> send
> update add 223.6.168.192.in-addr.arpa. IN PTR emilys-refrigerator.redfish-solutions.com.
> send
> update add garage-mandoor-cam.redfish-solutions.com. IN A 192.168.6.224
> send
> update add 224.6.168.192.in-addr.arpa. IN PTR garage-mandoor-cam.redfish-solutions.com.
> send
> update add patio-cam.redfish-solutions.com. IN A 192.168.6.225
> send
> update add 225.6.168.192.in-addr.arpa. IN PTR patio-cam.redfish-solutions.com.
> send
> update add front-office-cam.redfish-solutions.com. IN A 192.168.6.226
> send
> update add 226.6.168.192.in-addr.arpa. IN PTR front-office-cam.redfish-solutions.com.
> send
> update add driveway-cam.redfish-solutions.com. IN A 192.168.6.227
> send
> update add 227.6.168.192.in-addr.arpa. IN PTR driveway-cam.redfish-solutions.com.
> send
> update add garage-door-left.redfish-solutions.com. IN A 192.168.6.228
> send
> update add 228.6.168.192.in-addr.arpa. IN PTR garage-door-left.redfish-solutions.com.
> send
> update add garage-door-right.redfish-solutions.com. IN A 192.168.6.229
> send
> update add 229.6.168.192.in-addr.arpa. IN PTR garage-door-right.redfish-solutions.com.
> send
> update add garage-cam-right.redfish-solutions.com. IN A 192.168.6.230
> send
> update add 230.6.168.192.in-addr.arpa. IN PTR garage-cam-right.redfish-solutions.com.
> send
> update add garage-cam-left.redfish-solutions.com. IN A 192.168.6.231
> send
> update add 231.6.168.192.in-addr.arpa. IN PTR garage-cam-left.redfish-solutions.com.
> send
> update add nook-thermostat.redfish-solutions.com. IN A 192.168.6.232
> send
> update add 232.6.168.192.in-addr.arpa. IN PTR nook-thermostat.redfish-solutions.com.
> send
> update add smart-plug-1.redfish-solutions.com. IN A 192.168.6.233
> send
> update add 233.6.168.192.in-addr.arpa. IN PTR smart-plug-1.redfish-solutions.com.
> send
> update add smart-plug-2.redfish-solutions.com. IN A 192.168.6.234
> send
> update add 234.6.168.192.in-addr.arpa. IN PTR smart-plug-2.redfish-solutions.com.
> send
> update add spa942-3.redfish-solutions.com. IN A 192.168.6.235
> send
> update add 235.6.168.192.in-addr.arpa. IN PTR spa942-3.redfish-solutions.com.
> send
> update add spa504g-2.redfish-solutions.com. IN A 192.168.6.236
> send
> update add 236.6.168.192.in-addr.arpa. IN PTR spa504g-2.redfish-solutions.com.
> send
> update add spa504g-1.redfish-solutions.com. IN A 192.168.6.237
> send
> update add 237.6.168.192.in-addr.arpa. IN PTR spa504g-1.redfish-solutions.com.
> send
> update add spa942-1.redfish-solutions.com. IN A 192.168.6.238
> send
> update add 238.6.168.192.in-addr.arpa. IN PTR spa942-1.redfish-solutions.com.
> send
> update add spa112.redfish-solutions.com. IN A 192.168.6.239
> send
> update add 239.6.168.192.in-addr.arpa. IN PTR spa112.redfish-solutions.com.
> send
> update add Living-Room.redfish-solutions.com. IN A 192.168.6.240
> send
> update add 240.6.168.192.in-addr.arpa. IN PTR Living-Room.redfish-solutions.com.
> send
> update add Playroom.redfish-solutions.com. IN A 192.168.6.243
> send
> update add 243.6.168.192.in-addr.arpa. IN PTR Playroom.redfish-solutions.com.
> send
> update add Washingmachine.redfish-solutions.com. IN A 192.168.6.244
> send
> update add 244.6.168.192.in-addr.arpa. IN PTR Washingmachine.redfish-solutions.com.
> send
> update add Dryer.redfish-solutions.com. IN A 192.168.6.245
> send
> update add 245.6.168.192.in-addr.arpa. IN PTR Dryer.redfish-solutions.com.
> send
> update add cielo-bedroom.redfish-solutions.com. IN A 192.168.6.246
> send
> update add 246.6.168.192.in-addr.arpa. IN PTR cielo-bedroom.redfish-solutions.com.
> send
> update add cielo-greatroom.redfish-solutions.com. IN A 192.168.6.247
> send
> update add 247.6.168.192.in-addr.arpa. IN PTR cielo-greatroom.redfish-solutions.com.
> send
> update add zanders-tower.redfish-solutions.com. IN A 192.168.6.248
> send
> update add 248.6.168.192.in-addr.arpa. IN PTR zanders-tower.redfish-solutions.com.
> send
> update add zanders-laptop.redfish-solutions.com. IN A 192.168.6.249
> send
> update add 249.6.168.192.in-addr.arpa. IN PTR zanders-laptop.redfish-solutions.com.
> send
> update add zanders-occulus-quest.redfish-solutions.com. IN A 192.168.6.250
> send
> update add 250.6.168.192.in-addr.arpa. IN PTR zanders-occulus-quest.redfish-solutions.com.
> send
> update add zanders-iphone.redfish-solutions.com. IN A 192.168.6.251
> send
> update add 251.6.168.192.in-addr.arpa. IN PTR zanders-iphone.redfish-solutions.com.
> send
> update add mail.redfish-solutions.com. IN A 192.168.8.3
> send
> update add 3.8.168.192.in-addr.arpa. IN PTR mail.redfish-solutions.com.
> send
> update add apc.redfish-solutions.com. IN A 192.168.8.4
> send
> update add 4.8.168.192.in-addr.arpa. IN PTR apc.redfish-solutions.com.
> send
> update add apc2.redfish-solutions.com. IN A 192.168.8.5
> send
> update add 5.8.168.192.in-addr.arpa. IN PTR apc2.redfish-solutions.com.
> send
> update add freenas.redfish-solutions.com. IN A 192.168.8.6
> send
> update add 6.8.168.192.in-addr.arpa. IN PTR freenas.redfish-solutions.com.
> send
> update add mybook.redfish-solutions.com. IN A 192.168.8.8
> send
> update add 8.8.168.192.in-addr.arpa. IN PTR mybook.redfish-solutions.com.
> send
> update add Macmini2.redfish-solutions.com. IN A 192.168.8.9
> send
> update add 9.8.168.192.in-addr.arpa. IN PTR Macmini2.redfish-solutions.com.
> send
> update add iphone12-philip-sb.redfish-solutions.com. IN A 192.168.8.10
> send
> update add 10.8.168.192.in-addr.arpa. IN PTR iphone12-philip-sb.redfish-solutions.com.
> send
> update add macbook3.redfish-solutions.com. IN A 192.168.8.12
> send
> update add 12.8.168.192.in-addr.arpa. IN PTR macbook3.redfish-solutions.com.
> send
> update add kvm1.redfish-solutions.com. IN A 192.168.8.30
> send
> update add 30.8.168.192.in-addr.arpa. IN PTR kvm1.redfish-solutions.com.
> send
> update add kvm1-ipmi.redfish-solutions.com. IN A 192.168.8.31
> send
> update add 31.8.168.192.in-addr.arpa. IN PTR kvm1-ipmi.redfish-solutions.com.
> send
> update add ubuntu24.redfish-solutions.com. IN A 192.168.8.33
> send
> update add 33.8.168.192.in-addr.arpa. IN PTR ubuntu24.redfish-solutions.com.
> send
> update add builder.redfish-solutions.com. IN A 192.168.8.34
> send
> update add 34.8.168.192.in-addr.arpa. IN PTR builder.redfish-solutions.com.
> send
> update add centos7.redfish-solutions.com. IN A 192.168.8.35
> send
> update add 35.8.168.192.in-addr.arpa. IN PTR centos7.redfish-solutions.com.
> send
> update add openwrt-efi.redfish-solutions.com. IN A 192.168.8.36
> send
> update add 36.8.168.192.in-addr.arpa. IN PTR openwrt-efi.redfish-solutions.com.
> send
> update add freedos.redfish-solutions.com. IN A 192.168.8.37
> send
> update add 37.8.168.192.in-addr.arpa. IN PTR freedos.redfish-solutions.com.
> send
> update add win10.redfish-solutions.com. IN A 192.168.8.38
> send
> update add 38.8.168.192.in-addr.arpa. IN PTR win10.redfish-solutions.com.
> send
> update add win7.redfish-solutions.com. IN A 192.168.8.39
> send
> update add 39.8.168.192.in-addr.arpa. IN PTR win7.redfish-solutions.com.
> send
> update add centos6.redfish-solutions.com. IN A 192.168.8.40
> send
> update add 40.8.168.192.in-addr.arpa. IN PTR centos6.redfish-solutions.com.
> send
> update add kvm2.redfish-solutions.com. IN A 192.168.8.62
> send
> update add 62.8.168.192.in-addr.arpa. IN PTR kvm2.redfish-solutions.com.
> send
> update add kvm2-ipmi.redfish-solutions.com. IN A 192.168.8.63
> send
> update add 63.8.168.192.in-addr.arpa. IN PTR kvm2-ipmi.redfish-solutions.com.
> send
> update add rhel10.redfish-solutions.com. IN A 192.168.8.64
> send
> update add 64.8.168.192.in-addr.arpa. IN PTR rhel10.redfish-solutions.com.
> send
> update add ftp.redfish-solutions.com. IN CNAME mail.redfish-solutions.com.
> send
> update add www.redfish-solutions.com. IN CNAME mail.redfish-solutions.com.
> send
> update add pbx.redfish-solutions.com. IN CNAME openwrt.redfish-solutions.com.
> send
> update add ubuntu.redfish-solutions.com. IN CNAME ubuntu24.redfish-solutions.com.
> send
> update add openwrt3.redfish-solutions.com. IN CNAME openwrt.redfish-solutions.com.
> send
> update add ntp.redfish-solutions.com. IN CNAME rhel10.redfish-solutions.com.
> send
> update add openwrt.redfish-solutions.com. IN A 192.168.1.1
> send
> update add 1.1.168.192.in-addr.arpa. IN PTR openwrt.redfish-solutions.com.
> send
> update add openwrt.redfish-solutions.com. IN A 192.168.5.1
> send
> update add 1.5.168.192.in-addr.arpa. IN PTR openwrt.redfish-solutions.com.
> send
> update add openwrt.redfish-solutions.com. IN A 192.168.6.1
> send
> update add 1.6.168.192.in-addr.arpa. IN PTR openwrt.redfish-solutions.com.
> send
> update add openwrt.redfish-solutions.com. IN A 192.168.7.1
> send
> update add 1.7.168.192.in-addr.arpa. IN PTR openwrt.redfish-solutions.com.
> send
> update add openwrt.redfish-solutions.com. IN A 192.168.8.1
> send
> update add 1.8.168.192.in-addr.arpa. IN PTR openwrt.redfish-solutions.com.
> send
> update add openwrt-bios2.redfish-solutions.com. IN A 192.168.8.41
> send
> update add 41.8.168.192.in-addr.arpa. IN PTR openwrt-bios2.redfish-solutions.com.
> send
> update add openwrt-bios2.redfish-solutions.com. IN A 192.168.8.199
> send
> update add 199.8.168.192.in-addr.arpa. IN PTR openwrt-bios2.redfish-solutions.com.
> send
> update add tnsr1.redfish-solutions.com. IN A 24.116.100.93
> send
> update add pigpen.redfish-solutions.com. IN A 24.116.100.94
> send
> update add redfish-solutions.com. IN MX 10 mail.redfish-solutions.com.
> send
> update add _sip._udp.redfish-solutions.com. IN SRV 0 10 5060 pbx.redfish-solutions.com.
> send
>
>
> And both zones were primed via these commands:
>
> rndc addzone redfish-solutions.com. '{
> type primary;
> file "/var/run/dhcp/db.redfish-solutions.com";
> update-policy {
> grant local-ddns zonesub any;
> };
> };'
>
> rndc addzone 168.192.in-addr.arpa. '{
> type primary;
> file "/var/run/dhcp/db.168.192.in-addr.arpa";
> update-policy {
> grant local-ddns zonesub any;
> };
> };’
>
>
> and then I do “nsupdate -l -v -4 my-update-file-here”
>
> But I see 125 instances of “update failed: REFUSED” which incidentally is the number of PTR records.
>
> Lastly, if I query a local host A record that works. But when I query that address for a PTR record it fails.
>
> root at OpenWrt:~# dig -t a macmini2.redfish-solutions.com.
>
> ; <<>> DiG 9.20.15 <<>> -t a macmini2.redfish-solutions.com.
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23297
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 1232
> ; COOKIE: 39141732f1eb310601000000692dfcb178eb0b0ac919a619 (good)
> ;; QUESTION SECTION:
> ;macmini2.redfish-solutions.com. IN A
>
> ;; ANSWER SECTION:
> Macmini2.redfish-solutions.com. 3600 IN A 192.168.8.9
>
> ;; Query time: 0 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
> ;; WHEN: Mon Dec 01 13:38:09 MST 2025
> ;; MSG SIZE rcvd: 112
>
> root at OpenWrt:~# dig -x 192.168.8.9
>
> ; <<>> DiG 9.20.15 <<>> -x 192.168.8.9
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 10165
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 1232
> ; COOKIE: bf0f9ed67f6870c501000000692dfcb8991c9d7aa265fcbe (good)
> ;; QUESTION SECTION:
> ;9.8.168.192.in-addr.arpa. IN PTR
>
> ;; AUTHORITY SECTION:
> 168.192.IN-ADDR.ARPA. 86400 IN SOA 168.192.IN-ADDR.ARPA. . 0 28800 7200 604800 86400
>
> ;; Query time: 1 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
> ;; WHEN: Mon Dec 01 13:38:16 MST 2025
> ;; MSG SIZE rcvd: 136
>
> root at OpenWrt:~#
>
>
> So… why am I authoritative for “redfish-solutions.com <http://redfish-solutions.com/>” but not for “168.192.in-addr.arpa”?
>
> The top of my dhcpd.conf file looks like:
>
> authoritative;
> ddns-domainname "redfish-solutions.com.";
> ddns-update-style standard;
> ddns-updates on;
> ignore client-updates;
>
> update-static-leases on;
> use-host-decl-names on;
> update-conflict-detection off;
> update-optimization off;
>
> include "/var/run/named/session.key";
>
> zone redfish-solutions.com. {
> primary 127.0.0.1;
> key local-ddns;
> }
>
> zone 168.192.in-addr.arpa. {
> primary 127.0.0.1;
> key local-ddns;
> }
>
>
> My named.conf file contains:
>
> options {
> …
> // This is used e.g. by isc-dhcp
> allow-new-zones yes;
> …
> };
>
>
>
> It’s probably something simple but at this point I can’t see the forest for the trees…. Please help me get a patch out the door quickly.
>
> Thanks
>
>
>
>
>
> --
> Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list.
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka at isc.org
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