Why am I seeing device with bogus IP/MAC address like 255.255.255.255/FF:FF:FF:FF:FF:FF

Symptom

Possible Cause

This is a software bug.  And this could happen if a device has an IP outside DHCP address range for current network.

Some possible actions that could lead to this

• DHCP addresss range was changed(at either upstream router or Firewalla box running in DHCP mode) after some device already got an IP assigned
• A device has a static IP configured , which is outside DHCP address range for current network

Workaround

Before the fix is released, a quick workaround would simply delete such device in App.