The MAC address to be used for GVRP PDUs tunneling. When GVRP tunneling is enabled on a port, this MAC address will be used as the the destination MAC address of the customer GVRP PDUs received.This is the default behaviour in Provider (Q-in-Q) Bridges and customer bridges. In case of 802.1ad bridges, this will be done only when the outgoing port type is proprietary PNP. Inside a given Network,packets received with this MAC address will be treated as data packets and not processed. This is the default behaviour in case of Provider (Q-in-Q) Bridges and customer bridges. In case of 802.1ad Bridges, when the outgoing port type is not proprietary PNP, the destination address will be replaced with the reserved address defined for customer GVRP PDUs.Otherwise, they will be treated as data packets. When the GVRP PDU is sent out of the given Network, this MAC address will be replaced with the reserved address defined for Customer GVRP PDU. This is done only when when GVRP protocol tunnel status is set to Tunnel on the outgoing port.Dropped otherwise.