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

    Can't get IP from Xfinity on WAN.

    DHCP and DNS
    2
    6
    781
    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.
    • J
      jvwjgames
      last edited by

      I had two Power outages this weekend. When modem reboots and PFSense asks for an IP Xfinity doesn't DHCPOFFER a new one for quite a long time. Yes I have rebooted the modem loads of times. I even shutdown my whole network. Then rebooted everything starting at the Xfinity modem first then working downstream. I have also tried unplugging the WAN Ethernet cable for a bit on the PFSense side. Even did a release (relinquish lease) and renew as well to no avail.

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

        @jvwjgames

        Try putting another computer in place of pfsense to see if it gets an address. If it doesn't, then there's a problem from Xfinity. If there were power outages, there might be some damage to their network.

        With cable TV, there are nodes and line extenders that are AC powered. The AC from the utility goes to the nodes in your area, converted to DC and back to AC for distribution over the network to power the various pieces of equipment.

        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...

        J 1 Reply Last reply Reply Quote 0
        • J
          jvwjgames @JKnott
          last edited by

          @jknott what's weird is when I take it out of bridge mode. The internet works just fine. But when I put it into bridge mode. The internet fails and I cannot get a DHCP IP for a very very long time. I've even tried forcing the port to be negotiated at 1 gig cuz I've heard that can cause issues still nothing. I really want bridge mode to work.

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

            @jvwjgames

            Try with another computer, to see where the problem is.

            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...

            J 1 Reply Last reply Reply Quote 0
            • J
              jvwjgames @JKnott
              last edited by jvwjgames

              @jknott I put modem back in bridge mode and my laptop directly connected to modem get a WAN IP from Xfinity. But PFsense doesn't I take it out of bridge mode PFsense gets IP 10.0.0.146 but Bridge mode can't get external IP.

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

                @jvwjgames

                Do a packet capture.

                Shut down pfsense
                Disconnect the WAN cable
                Restart pfsense
                Run Packet Capture, filtering on DHCP
                Reconnect the WAN cable
                Let Packet Capture run for a couple of minutes and post the capture file here.

                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...

                1 Reply Last reply Reply Quote 0
                • First post
                  Last post
                Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.