Prefix delegation visibility with DHCPv6 snooping

The DHCPv6 snoop table displays delegated prefix details. The show dhcp-security ipv6 binding command will display IA_PD details, whenever present, as a separate snoop entry with a type field against it. The type field identifies kind of snoop entry. You can use this information to infer the per-routing-instance and per-address-family counts.