Unretrievable hardware address

I launched LinuxCNC many times before, okay, and the Axis screen was operable.  Today, I powered on the CNC box and tried to launch LinuxCNC accidentally without the Ethernet cord plugged in.  An error report popped up, and I realized I forgot to plug in the Ethernet cord.  I plugged in the Ethernet cord when the CNC box was powered on, tried launching LinuxCNC again and an error report showed 'hm2_eth: ERROR: Could not retrieve hardware address (MAC) of 10.10.10.10: Resource temporarily unavailable'  I powered off the CNC box and the PC and power both on and tried launching LinuxCNC however still receive the same error report.  Please see my attached troubleshooting.  How can to make the hm2_eth retrieve the hardware address and launch LinuxCNC? 

Nevermind.  The CNC box and the power strip remained powered off for about an hour.  I powered on the the power strip and CNC box and knew immediately when the Ethernet lights next to the port were lit that a connection probably could be made.  I launched LinuxCNC and should be okay now.