According to NTAC it's something to do with Cisco Device Probing or something to that effect.

Get into DIM and list out the ARP cache. You will see an entry with quad zero's and it will be associated with a MAC address of a Cisco device. Ask the network folks to isolate the 9100 from that device. The 9100 does NOT like quad zero's.

NTAC would point you to this document.

https://www.cisco.com/c/en/us/suppo...x/116529-problemsolution-product-00.html