This class contains the address of the host that performs the stacked operations. It is typically used to access the Content Filtering Server (CF) to perform virus filtering in the traffic. The remote backend can be accessed using the TCP protocol or a local socket, e.g., RemoteStackingBackend(addrs=(SockAddrInet('192.168.2.3', 1318),)) or RemoteStackingBackend(addrs=(SockAddrUnix('/var/run/vcf/vcf.sock'),)). .