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    DHCP not giving out DNS address

    Scheduled Pinned Locked Moved DHCP and DNS
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    • S
      stewii
      last edited by

      Did the dump with wireshark. Followed this guide https://en.wikiversity.org/wiki/Wireshark/DHCP and do not see anything in there with the DNS server IP address that I am specifying in the DHCP server.

      edit: If this is hard set in windows would my linux/android clients get the dns entry? How would I go about fixing it in windows if it is hard set?

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      • DerelictD
        Derelict LAYER 8 Netgate
        last edited by

        If windows has it hard set remove it from the interface config in windows.

        Chattanooga, Tennessee, USA
        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
        Do Not Chat For Help! NO_WAN_EGRESS(TM)

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        • johnpozJ
          johnpoz LAYER 8 Global Moderator
          last edited by

          Didn't see anything?  How about you post it…

          So show us that you wanting to hand out 192.168.1.10, for example I hand out 192.168.3.10 -- here I did a release and then renew, you can see in the offer 192.168.3.10 was offered..

          dnsviadhcp.png
          dnsviadhcp.png_thumb

          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

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          • S
            stewii
            last edited by

            Thanks for pointing out where to look. I changed it to 192.168.1.52 just to try and still receiving 192.168.1.1. See attachments. I think I just realized what you meant by windows hard set. No it is not hard set.

            1.PNG
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            2.PNG
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            • DerelictD
              Derelict LAYER 8 Netgate
              last edited by

              You have another DHCP server on your network. Look at the source MAC address of the DHCP server responses.

              Chattanooga, Tennessee, USA
              A comprehensive network diagram is worth 10,000 words and 15 conference calls.
              DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
              Do Not Chat For Help! NO_WAN_EGRESS(TM)

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              • johnpozJ
                johnpoz LAYER 8 Global Moderator
                last edited by

                Or you have a reservation setup for that client.. Your client is 192.168.1.7 but your pool is 150-254 so clearly its not coming from that pool..

                Notice my pool, my client .100 is outside that pool I have a reservation/static for it set..

                staticreservation.png
                staticreservation.png_thumb

                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

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                • S
                  stewii
                  last edited by

                  Don't have a second DHCP server but I do have a static reservation for the client. Almost all of my clients have a static reservation. So this brings up two questions.

                  1. if I use a DHCP reservation on pfsense how do I send DNS to the client that gets the reservation without hard setting it on the client?

                  2 I have other non windows clients (Sonos and android) that are in the DHCP pool that do not report back to my dns server 192.168.1.52 (remember I changed it). If DHCP is sending out DNS why wouldn't these clients use the DNS that it is supposed to from DHCP?

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                  • johnpozJ
                    johnpoz LAYER 8 Global Moderator
                    last edited by

                    " If DHCP is sending out DNS why wouldn't these clients use the DNS that it is supposed to from DHCP?"

                    because they haven't updated their lease yet??

                    So set the dns you want your client to use in the reservation..  If you don't then yeah its going to get the IP address your dhcp server is running on as default.

                    reservation.png_thumb
                    reservation.png

                    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

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                    • S
                      stewii
                      last edited by

                      So after a reboot of pfsense, everything started working as it should. I guess the reboot released all the static leases?

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                      • johnpozJ
                        johnpoz LAYER 8 Global Moderator
                        last edited by

                        huh?  Or you client updated its lease.. And the reboot had zero to do with it..

                        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

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                        • S
                          stewii
                          last edited by

                          I guess I should have been more clear. After a reboot of pfsense, all clients started talking to my DNS server as it is configured in pfsense. Meaning all clients windows linux android and whatever sonos runs on(probably linux) started reporting into the DNS server at 192.168.1.52. So take it how you want….

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