The undo mac-address temporary command deletes all the temporary MAC address entries in the system.
When the interface card is pulled out, the static MAC address entries configured on the interfaces are reserved as temporary MAC address entries. After the interface card is plugged again, the static MAC address entries are restored.
If the interface card is not plugged after being pulled out, the temporary MAC address entries become unnecessary and occupy the system resources. In this case, you can run the undo mac-address temporary command to delete all the temporary MAC address entries in the system.