in statefull mode; if disabled
only the DHCPv6 address having the
longest preferred lifetime is assigned
+dhcpv6_hostidlength integer 12 Host ID length of dynamically created leases,
+ allowed values: 12 - 64 (bits).
dhcpv6_na bool 1 DHCPv6 stateful addressing hands out IA_NA -
Internet Address - Network Address
dhcpv6_pd bool 1 DHCPv6 stateful addressing hands out IA_PD -