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    What is IP 169.254.178.43 ?

    Scheduled Pinned Locked Moved General pfSense Questions
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    • P
      Patch @chudak
      last edited by

      @chudak said in What is IP 169.254.178.43 ?:

      All of the sudden I started getting emails from pfsense like this: ...
      ip address: 169.254.178.43

      I guess it is related to IPv4 link-local (169.254.x.x) gateway does not function
      With 2.5.1 intermittently my laptop doesn't get a valid IP address, instead getting one from 169.254.x.x which in not in my LAN IP address range.

      GertjanG JKnottJ 2 Replies Last reply Reply Quote 0
      • GertjanG
        Gertjan @Patch
        last edited by

        @patch said in What is IP 169.254.178.43 ?:

        instead getting one from 169.254.x.x which in not in my LAN IP address range

        Not 'getting'.
        Self-assigning.
        Because it could find a DHCP server that would give it a DHCP lease, or, nuance, it got a lease that it wouldn't accept.

        Routing to the Internet won't work of course.

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

        1 Reply Last reply Reply Quote 0
        • JKnottJ
          JKnott @Patch
          last edited by

          @patch

          Those 169.254 addresses indicate a DHCP problem, not gateway. The DHCP client will revert to one of those addresses when a DHCP address isn't available.

          PfSense running on Qotom mini PC
          i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
          UniFi AC-Lite access point

          I haven't lost my mind. It's around here...somewhere...

          chudakC 1 Reply Last reply Reply Quote 1
          • chudakC
            chudak @JKnott
            last edited by

            @jknott said in What is IP 169.254.178.43 ?:

            @patch

            Those 169.254 addresses indicate a DHCP problem, not gateway. The DHCP client will revert to one of those addresses when a DHCP address isn't available.

            how troubleshoot it ?

            thx

            JKnottJ 1 Reply Last reply Reply Quote 0
            • JKnottJ
              JKnott @chudak
              last edited by

              @chudak

              One thing you can do is packet capture to see what's happening. Also, is it just one device that gets that address? Or all? If all, then it's likely the DHCP server. If just one, then the problem is with that device.

              Run Packet Capture on the LAN interface and filter or DHCP. Then connect that device and see what turns up.

              PfSense running on Qotom mini PC
              i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
              UniFi AC-Lite access point

              I haven't lost my mind. It's around here...somewhere...

              chudakC 1 Reply Last reply Reply Quote 0
              • chudakC
                chudak @JKnott
                last edited by

                @jknott said in What is IP 169.254.178.43 ?:

                @chudak

                One thing you can do is packet capture to see what's happening. Also, is it just one device that gets that address? Or all? If all, then it's likely the DHCP server. If just one, then the problem is with that device.

                Run Packet Capture on the LAN interface and filter or DHCP. Then connect that device and see what turns up.

                Ok copy will try.
                Based on MAC it's my iPhone and it does not happen on all devices and too often.

                Thx

                JKnottJ 1 Reply Last reply Reply Quote 0
                • JKnottJ
                  JKnott @chudak
                  last edited by

                  @chudak

                  When you capture an occasion when it fails, do you see anything from the DHCP server? However, if it only happens with that phone and only occasionally, it's likely a phone problem, not pfsense. Is it an older phone? Is it one of those that slows down when the battery doesn't hold a charge as well?

                  PfSense running on Qotom mini PC
                  i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
                  UniFi AC-Lite access point

                  I haven't lost my mind. It's around here...somewhere...

                  chudakC 1 Reply Last reply Reply Quote 0
                  • chudakC
                    chudak @JKnott
                    last edited by

                    @jknott said in What is IP 169.254.178.43 ?:

                    @chudak

                    When you capture an occasion when it fails, do you see anything from the DHCP server? However, if it only happens with that phone and only occasionally, it's likely a phone problem, not pfsense. Is it an older phone? Is it one of those that slows down when the battery doesn't hold a charge as well?

                    It's not an old phone, I think.
                    Need to keep an eye on it to be answer to answer all questions :)

                    J 1 Reply Last reply Reply Quote 0
                    • J
                      jdeloach @chudak
                      last edited by jdeloach

                      This post is deleted!
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                      • S
                        SteveITS Galactic Empire @chudak
                        last edited by

                        @chudak said in What is IP 169.254.178.43 ?:

                        emails from pfsense

                        It's an email? That implies something in pfSense is triggering an alert that is sending you a notification email. What is in the logs at that time?

                        By itself the text shown seems rather meaningless...as noted an APIPA address is self-assigned by the default when DHCP isn't functioning. But then why would pfSense even know about the IP in a subnet that's not its own? And what is the alert that is triggering...there is no alert or error as written? What is the email subject?

                        re: Private Address, that is for creating a unique MAC address not IP address.

                        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 👍 helpful posts!

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