Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    New Unifi modem and no internet on LAN

    Scheduled Pinned Locked Moved General pfSense Questions
    16 Posts 5 Posters 1.2k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • stephenw10S
      stephenw10 Netgate Administrator
      last edited by

      Yup not pulling a lease at all has to be an issue with the modem. Is it locked to the laptop MAC? You power cycled it?

      Is it actually a 'modem' or a router? Does the laptop pull a public IP from the ISP or something private from the 'modem'?

      Steve

      Y 1 Reply Last reply Reply Quote 0
      • Y
        yaegermeister163 @stephenw10
        last edited by

        @stephenw10 The modem is a Unifi UCI. When I plug the laptop into the modem I get a DHCP address that is in the same subnet as the gateway address. I confirmed with the ISP that it does not lock the modem to a specific MAC address for the router.

        @viragomann is there anything specific regarding the system and DHCP logs that I should look for?

        J V stephenw10S chpalmerC 4 Replies Last reply Reply Quote 0
        • J
          Jarhead @yaegermeister163
          last edited by

          @yaegermeister163 Did you plug a pc into the modem and check?
          If you just switched it, some ISP's make you "accept terms" before you get internet. Usually you have to go to a captive portal or similar. Maybe that's it.

          Y 1 Reply Last reply Reply Quote 0
          • V
            viragomann @yaegermeister163
            last edited by

            @yaegermeister163
            The DHCP log should show, if the DHCP client tries to pull an IP and maybe why it fails.
            The system log could show if there are any layer 2 issues.

            Best to post the section of both after reconnecting the WAN plug.

            For analyzing DHCP issues, you can also sniff the DHCP traffic on WAN with the packet capture tool (ports 67 + 68), full details level.

            Y 1 Reply Last reply Reply Quote 0
            • Y
              yaegermeister163 @viragomann
              last edited by

              @viragomann I keep seeing WAN_DHCP (ISP IP address): sendto error:65

              V 1 Reply Last reply Reply Quote 0
              • V
                viragomann @yaegermeister163
                last edited by

                @yaegermeister163
                This could be an aftereffect, since the interface IP (+gateway) is gone.
                Basically the error means, that pfSense cannot talk to the gateway.

                1 Reply Last reply Reply Quote 0
                • Y
                  yaegermeister163 @Jarhead
                  last edited by

                  @Jarhead I have no issues getting to the internet when I plug the computer directly to the modem.

                  1 Reply Last reply Reply Quote 0
                  • stephenw10S
                    stephenw10 Netgate Administrator @yaegermeister163
                    last edited by

                    @yaegermeister163 said in New Unifi modem and no internet on LAN:

                    When I plug the laptop into the modem I get a DHCP address that is in the same subnet as the gateway address.

                    And, to be clear, that's public IP?

                    Y 1 Reply Last reply Reply Quote 0
                    • Y
                      yaegermeister163 @stephenw10
                      last edited by

                      @stephenw10 Yes, it is a public IP. I have another router and I got that up and running. Going to factory reset the 3100 and start over. Something is buggering it up and I am not sure what it is.

                      1 Reply Last reply Reply Quote 1
                      • chpalmerC
                        chpalmer @yaegermeister163
                        last edited by

                        @yaegermeister163 said in New Unifi modem and no internet on LAN:

                        I confirmed with the ISP that it does not lock the modem to a specific MAC address for the router.

                        Yes but the modem will limit the number of MACs it will communicate with per power cycle based on the config file that the ISP sends to it. Most residential accounts limit to only one... Some commercial accounts will allow from 2 to 5 from my experience.

                        You can try cloning the MAC of a device that worked on your pfSense WAN page or simply reboot the modem every time you try a new interface.

                        Triggering snowflakes one by one..
                        Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

                        1 Reply Last reply Reply Quote 1
                        • First post
                          Last post
                        Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.