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Can't find IPV6 Device on my network

Scheduled Pinned Locked Moved IPv6
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  • M Offline
    MaxK 0
    last edited by Apr 5, 2024, 5:34 PM

    The following firewall block is being logged on my IOT VLAN / Interface:

    4df3a419-ce4f-488a-acf1-713eafdac5ce-image.png

    I believe that the last 4 digits of the link local Source address (:aba7) should translate into the last 4 digits of the MAC address (ab:a7). But I have not been able to find the source device despite checking the MAC address of every device on my network.

    I run duel stack IPv4/IPv6 on my WAN, LAN, and other interfaces but not on the IOT interface. I have checked the ARP table, NDP table, and the MAC addresses of all DHCP leases but I cannot find a match for that Source IPv6 address (or MAC).

    Does anyone have some hints on how to find this device?

    Thanks!

    J 1 Reply Last reply Apr 5, 2024, 7:19 PM Reply Quote 0
    • J Offline
      JKnott @MaxK 0
      last edited by Apr 5, 2024, 7:19 PM

      @MaxK-0

      It is possible for the link local address to use other than the MAC address.

      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
      • M Offline
        MaxK 0
        last edited by Apr 6, 2024, 12:35 PM

        I was able to locate the device using:

        netsh int ipv6 show neighbors
        

        This gave me the MAC address for the link local ipv6 addresses.

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