Kernel: arp: unknown hardware address format (0x0800)

  • Hi,

    I've been seeing a lot of this message in my system log, lately. What does it mean and is it something to worry about or I can just ignore it? My pfSense [2.0.2-RELEASE (i386)] seems to be working without any problems or performance issues, aside from that message.

    Thanks for your help.


  • Rebel Alliance Developer Netgate

    That means that it received an ARP packet from some other device on the network and that device sent a packet that wasn't recognized.

    It could be coming from the WAN or LAN, hard to tell without running packet captures and looking for it.

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