Adj resolve request: Failed to resolve… [ Cisco 3750X ]

After a migration to a pair of 3750Xs I was getting a bunch of disconcerting ARP errors in the logs. After a bit of digging, this appears to be a known bug. Error message content examples are shown below:

Nov  4 12:41:00: %ADJ-3-RESOLVE_REQ: Adj resolve request: Failed to resolve 172.17.22.57 Vlan21
Nov  4 12:41:18: %ADJ-3-RESOLVE_REQ: Adj resolve request: Failed to resolve 172.17.24.53 Vlan28

This was fixed/worked around with:

no ip cef optimize neighbor resolution
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