Force MAC address for testing purposes

src/drivers/net/mlx_ipoib/mt25218.c

 		/* point to NIC specific routines */
 		nic->nic_op = &mt25218_operations;
 
+		uint8_t fixed_node_addr[ETH_ALEN] = { 0x00, 0x02, 0xc9,
+						      0x20, 0xf5, 0x95 };
+		memcpy ( nic->node_addr, fixed_node_addr, ETH_ALEN );
+
 		return 1;
 	}
 	/* else */