Revert "Do not associate IP and MAC on down table. It should help #7813 and #7833"
This reverts commit aa61ecfde0952ed1c3a035ac9489f5a5f9c51425.
Revert "Do not associate IP and MAC on down table. It should help #7813 and #7833"
This reverts commit aa61ecfde0952ed1c3a035ac9489f5a5f9c51425.