YYMUX parameter*    ==  YYMUX=host[:port][:connMap]
           connMap  ==  ProtoList[:dstHostList[:srcHostList]]
                    --  default: none

This parameter specifies a YYMUX server to be used as an upstream proxy server of this DeleGate. The connection established to the YYMUX server, to be used to tunnel and multiplex TCP/IP connections over it, is retained as if it is persistent. If the tunnel is broken before the disconnection of the tunneled TCP/IP connections, for example when the host of this DeleGate changed its IP-address, the YYMUX tunnel is reconnected and restored based on the resumption protocol of the YYMUX protocol.