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

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