Auto SP/BMC firmware upgrade fails due to no ARP response coming on e0M

• Automatic SP/BMC firmware upgrade on a node fails.
  • Node reports SPAutoUpgradeFailedMajorAlert alert.
• Ping and SSH to SP/BMC IP Address times out.
• Issue persists despite:
  • Reinitiating firmware upgrade from cluster shell or SP/BMC.
  • Rebooting the SP/BMC.
  • Restarting servprocd.
• In the e0M ARP table entries, the gateway MAC is not listed.
• Packet trace collected on port e0M reveals:
  • e0M port sends ARP requests.
  • No response ARP response is received.
• If issue is with SP/BMC access you may see this printed from console output:

[IPMIMain][INFO]No data found in arp table, update arp with command: ping -I eth0 -c 1 -s 8 -W x.x.x.x > /dev/null