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    KEA DHCP missing "Register DHCP leases in DNS Resolver..."

    Scheduled Pinned Locked Moved DHCP and DNS
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    • S
      SteveITS Galactic Empire @softwareplumber
      last edited by

      @softwareplumber said in KEA DHCP missing "Register DHCP leases in DNS Resolver...":

      Still an issue.

      https://www.netgate.com/blog/improvements-to-kea-dhcp

      Pre-2.7.2/23.09: Only install packages for your version, or risk breaking it. Select your branch in System/Update/Update Settings.
      When upgrading, allow 10-15 minutes to restart, or more depending on packages and device speed.
      Upvote ๐Ÿ‘ helpful posts!

      1 Reply Last reply Reply Quote 2
      • U
        uneventfullogs
        last edited by

        There is no longer a way to revert back in the GUI, so my setup is broken.

        It should not have been released without better migration testing.

        juanzelliJ 1 Reply Last reply Reply Quote 1
        • juanzelliJ
          juanzelli @uneventfullogs
          last edited by juanzelli

          @uneventfullogs I believe you should be able to revert in System->Advanced->Networking. At least, that's where I've been able to do it in the past.

          cd035f12-3c69-4e1d-8122-3518bbf7dfbc-image.png

          Netgate 4100 and HPE InstantOn network at home

          1 Reply Last reply Reply Quote 0
          • B
            BruceX @noloader
            last edited by

            @noloader Thanks, just got bit by this and lost a day trying to figure out why a local server's new IP wasn't being recognized. I finally restarted the dns forwarder (to pihole) and I lost everything (local names) and my day trying to track down "what I did" before remembering yesterday I had responded to the deprecation warning.

            It is now a year later and this problem persists. This is my wake up call to switch to the other guy sometime this coming year.

            4 1 Reply Last reply Reply Quote 0
            • 4
              4o4rh @BruceX
              last edited by

              @BruceX I switched to kea after the 24.11 upgrade and don't have any problems. Before I had to revert to ISC per above.

              B 1 Reply Last reply Reply Quote 0
              • B
                BruceX @4o4rh
                last edited by

                @4o4rh I've not used the patches package before but I interpret your statement as applying these patches also fixes this dns not registering problem.

                I'll have to wait awhile before having the courage to apply these after the last 'fix' I applied lost me a few days to debugging and fixing my system.

                P 1 Reply Last reply Reply Quote 0
                • P
                  pvk1 @BruceX
                  last edited by

                  @BruceX I have now enabled the KEA DHCP server. On settings I checked both "Enable DNS registration" en "Enable early DNS registration". All seems to work now. The only thing is you still need to provide an IP address of the NTP server rather than a domain name.

                  4 johnpozJ 2 Replies Last reply Reply Quote 0
                  • 4
                    4o4rh @pvk1
                    last edited by

                    @pvk1 do you mean in the ntp server? i don't have this problem. I am using normal country level ntp pools

                    P 1 Reply Last reply Reply Quote 0
                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator @pvk1
                      last edited by

                      @pvk1 said in KEA DHCP missing "Register DHCP leases in DNS Resolver...":

                      provide an IP address of the NTP server rather than a domain name.

                      Which is how it should be per the rfc.. dhcp doesn't hand the client a fqdn for ntp - it hands out an IP.

                      An intelligent man is sometimes forced to be drunk to spend time with his fools
                      If you get confused: Listen to the Music Play
                      Please don't Chat/PM me for help, unless mod related
                      SG-4860 24.11 | Lab VMs 2.8, 24.11

                      4 1 Reply Last reply Reply Quote 0
                      • 4
                        4o4rh @johnpoz
                        last edited by

                        @johnpoz I must be understanding something different from the statement.
                        In my NTP Server settings, I use de.pool.ntp.org and it works fine.

                        GertjanG 1 Reply Last reply Reply Quote 0
                        • GertjanG
                          Gertjan @4o4rh
                          last edited by Gertjan

                          @4o4rh said in KEA DHCP missing "Register DHCP leases in DNS Resolver...":

                          In my NTP Server settings, I use de.pool.ntp.org and it works fine.

                          That's the NTP server process. It uses the WAN side.

                          Here this :

                          6392511b-77fe-49f6-9c74-41205bc1174c-image.png

                          which has 'nothing' to do with the NTP DHCP server setting (the DJCP server operates on the LAN side of pfSense). The DHCP server can inform the DHCP clients of a known (local) NTP server, like pfSense, as it has a NTP server on board.
                          This DHCP (kea or ISC) 'NTP setting' needs to be an IP, and is typicality the pfSense LAN IP.

                          Example :

                          bbc536de-648b-42ee-b588-5fd049d27f8c-image.png

                          No "help me" PM's please. Use the forum, the community will thank you.
                          Edit : and where are the logs ??

                          johnpozJ 4 2 Replies Last reply Reply Quote 1
                          • johnpozJ
                            johnpoz LAYER 8 Global Moderator @Gertjan
                            last edited by

                            ^exactly - pfsense allowed you to put in a fqdn for the dhcp server settings before. They would just translate that to an IP for dhcp settings. They should either modify the note below the box, or allow for fqdn (that they translate for you).. But fqdn is a bad idea because something like something.pool.ntp.org can resolve to lots of different IPs - that change, and pool members come and go so if they hand out IP X, tomorrow maybe that IP is no longer valid, etc

                            It really was never a good idea to allow users to put in fqdn for the dhcp server ntp it hands out.

                            An intelligent man is sometimes forced to be drunk to spend time with his fools
                            If you get confused: Listen to the Music Play
                            Please don't Chat/PM me for help, unless mod related
                            SG-4860 24.11 | Lab VMs 2.8, 24.11

                            1 Reply Last reply Reply Quote 0
                            • 4
                              4o4rh @Gertjan
                              last edited by

                              @Gertjan ah ok. my clients take ntp from pfsense. that's why i don't run into this problem then.

                              1 Reply Last reply Reply Quote 0
                              • P
                                pvk1 @4o4rh
                                last edited by

                                @4o4rh said in KEA DHCP missing "Register DHCP leases in DNS Resolver...":

                                @pvk1 do you mean in the ntp server? i don't have this problem. I am using normal country level ntp pools

                                I mentioned it because the DHCP server did not run when I migrated it the first time. It did not give an error.

                                johnpozJ 1 Reply Last reply Reply Quote 0
                                • johnpozJ
                                  johnpoz LAYER 8 Global Moderator @pvk1
                                  last edited by

                                  @pvk1 yeah I think there is/was an issue with kea if you had fqdn for ntp before, that it would just not run.

                                  An intelligent man is sometimes forced to be drunk to spend time with his fools
                                  If you get confused: Listen to the Music Play
                                  Please don't Chat/PM me for help, unless mod related
                                  SG-4860 24.11 | Lab VMs 2.8, 24.11

                                  GertjanG 1 Reply Last reply Reply Quote 0
                                  • GertjanG
                                    Gertjan @johnpoz
                                    last edited by

                                    @johnpoz said in KEA DHCP missing "Register DHCP leases in DNS Resolver...":

                                    that it would just not run.

                                    Exact.
                                    If I do this :

                                    0a5a0cbc-1ecd-4432-88b7-eeeefae3332e-image.png

                                    and then I save :

                                    10f8c4fd-6ffe-428b-b4bc-fcf33c4de16b-image.png

                                    I see a big red error message :

                                    cb5b3087-752b-42f3-8935-fce39b1e8b33-image.png

                                    telling me that a host name is a no go.

                                    Still, the tooltip told me :

                                    d0b2477a-5dac-4b27-a3fd-c71a78e49ea6-image.png

                                    ๐Ÿ˜Š

                                    No "help me" PM's please. Use the forum, the community will thank you.
                                    Edit : and where are the logs ??

                                    johnpozJ 1 Reply Last reply Reply Quote 0
                                    • johnpozJ
                                      johnpoz LAYER 8 Global Moderator @Gertjan
                                      last edited by

                                      @Gertjan yeah this is the confusing part for some users

                                      confusing.jpg

                                      Maybe that should of never been an option, since dhcp can never use it - but pfsense was doing some magic in the background to convert the fqdn you put in to an IP.. Which guess is ok if the ntp server only has 1 IP, etc.. But with a pool address which is very dynamic and pool membership is very fluid - since its really just users that add their server to the pool, these change all the time..

                                      So in hindsight (which is always 20/20) allowing for fqdn prob not the best choice.

                                      An intelligent man is sometimes forced to be drunk to spend time with his fools
                                      If you get confused: Listen to the Music Play
                                      Please don't Chat/PM me for help, unless mod related
                                      SG-4860 24.11 | Lab VMs 2.8, 24.11

                                      1 Reply Last reply Reply Quote 0
                                      • C
                                        clawsonn @Slowmotion 0
                                        last edited by clawsonn

                                        @Slowmotion-0 said in KEA DHCP missing "Register DHCP leases in DNS Resolver...":

                                        As of this moment (Feb-2024), besides the static IP mapping approach, is there any other trick we can do to inject the KEA DHCP leases into DNS Resolver?

                                        What is the KEA trick with static IP mapping approach?
                                        I have a machine with 2.7.2 running KEA and dns resolver does not resolve any hostnames that are acquired from dhcp or hostnames that are DHCP static reservation ip mapped.

                                        I read most the posts and appears that 24.11 PLUS has returned with this feature but my machine is CE not PLUS https://docs.netgate.com/pfsense/en/latest/releases/24-11.html "This release includes support for DNS Registration of DHCP client hostnames from the Kea DHCP daemon to the Unbound DNS Resolver"

                                        johnpozJ GertjanG 2 Replies Last reply Reply Quote 0
                                        • johnpozJ
                                          johnpoz LAYER 8 Global Moderator @clawsonn
                                          last edited by

                                          @clawsonn just move back to isc, until such time that kea has all the features you want there is no reason to move to it.

                                          Yes isc is end of life, doesn't mean it stopped working or that there are any sort of serious security risks with running it.

                                          If your running CE version, wait til 2.8 comes out - hopefully kea will have the features you want then.

                                          An intelligent man is sometimes forced to be drunk to spend time with his fools
                                          If you get confused: Listen to the Music Play
                                          Please don't Chat/PM me for help, unless mod related
                                          SG-4860 24.11 | Lab VMs 2.8, 24.11

                                          1 Reply Last reply Reply Quote 0
                                          • GertjanG
                                            Gertjan @clawsonn
                                            last edited by Gertjan

                                            @clawsonn said in KEA DHCP missing "Register DHCP leases in DNS Resolver...":

                                            I have a machine with 2.7.2 running KEA and dns resolver does not resolve any hostnames that are acquired from dhcp

                                            Then this option would do the trick :
                                            Under Services > DNS Resolver > General Settings, there is an option called "DHCP registration" (something like that, I don't have that anymore since I use Kea on 24.11)
                                            If these host names are not valid ... call Houston. Some device don't even communicate a host name.
                                            And worse : every time a lease is received, the pfSense DNS (resolver) gets restarted.

                                            @clawsonn said in KEA DHCP missing "Register DHCP leases in DNS Resolver...":

                                            or hostnames that are DHCP static reservation ip mapped

                                            That's the option right after.
                                            That option always worked for me, I've been using 2.7.2 for a while.
                                            And you can check they are included in the local DNS cache : see this file : /etc/hosts
                                            If this doesn't work for you : call Houston again : you have a DNS problem.

                                            @clawsonn said in KEA DHCP missing "Register DHCP leases in DNS Resolver...":

                                            I read most the posts and appears that 24.11 PLUS has returned with this feature but my machine is CE not PLUS

                                            Correct. That's the new way of doing things.
                                            With 24.11 I see these lines in the DHCP logs :

                                            2024-12-10 08:05:49.292692+01:00 	kea2unbound 	72549 	Write include: /var/unbound/leases/leases4.conf (f8fa5d9f54dbf4eb328a3018566546c4e14278931f34a53625dc5d0cd16da077)
                                            2024-12-10 08:05:49.230901+01:00 	kea2unbound 	72549 	Add record: "iphone-xii-gertjan.bhf.tld. 2400 IN A 192.168.1.35"
                                            

                                            => as soon as my phone connects to the LAN network, it gets a DHCPv4 lease.
                                            The lease contains a valid host name, and the host name and IPv4 is communicated to the resolver (unbound).
                                            I'm testing this now for a week or so. Its looking very good.
                                            Btw : same story for the IPv6 and the reverse.

                                            Don't worry, 2.8.x show up. Netgate wanted this new system to be tested first by the ones who are paying for it (Plus users) before its releases the same functionality into the 'free' version ๐Ÿ˜Š

                                            No "help me" PM's please. Use the forum, the community will thank you.
                                            Edit : and where are the logs ??

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