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We are encountering this bug and are able to reproduce, and if we were in production with this device we would have been taken fully down. The claim in the BST says version 8.4(9) (and presumably the later 8.4(10)) contains the fix. Rest assured it...
Just ran into this exact issue tonight. Someone on my team recently enabled "mac-address auto." That coupled with a power outage, and we were seeing this error log and the MACs being the same. Only 1 IP would be reachable, and typically it was the...