swIPv6NeighborCacheRouteStatus is the standard RowStatus object used to create or delete an entry in the IPv6 neighbor cache; per the table's own description, once created an entry cannot be modified, only created or destroyed. Admins use this to manually add a static neighbor cache entry or remove one, rather than waiting for dynamic neighbor discovery. For example, setting swIPv6NeighborCacheRouteStatus to destroy removes a stale or manually added neighbor entry from the cache.