PLC Device
                            \                   +---------
            PLC Device A     \                 /
                    \         \               +
                     \         \              |
              PLC Device B -- PANC ===========+  Internet
                     /         /              |
                    /         /               +
   PLC Device---PLC Device   /                 \
                            /                   +---------
           PLC Device---PLC Device

         <------------------------->
         PLC subnet (IPv6 over PLC)