···531531 a software implementation.532532533533.. note:: VLAN ID 0 corresponds to the port private database, which, in the context534534- of DSA, would be the its port-based VLAN, used by the associated bridge device.534534+ of DSA, would be its port-based VLAN, used by the associated bridge device.535535536536- ``port_fdb_del``: bridge layer function invoked when the bridge wants to remove a537537 Forwarding Database entry, the switch hardware should be programmed to delete···554554 associated with this VLAN ID.555555556556.. note:: VLAN ID 0 corresponds to the port private database, which, in the context557557- of DSA, would be the its port-based VLAN, used by the associated bridge device.557557+ of DSA, would be its port-based VLAN, used by the associated bridge device.558558559559- ``port_mdb_del``: bridge layer function invoked when the bridge wants to remove a560560 multicast database entry, the switch hardware should be programmed to delete