This section describes the basic concepts of DHCPv6 snooping.
DHCPv6 snooping is a DHCPv6 security feature that establishes and maintains a DHCPv6 snooping binding table that records information about DHCPv6 clients by intercepting DHCPv6 packets between a DHCPv6 server and the DHCPv6 clients. Such a binding table contains user information such as the MAC address, IPv6 address, lease, VLAN ID, and interface information. Based on this table, the device analyzes and processes packets as well as filtering out attack packets, providing security services for DHCPv6.