DHCPv6 snooping commands clear dhcpv6-snooping binding clear dhcpv6-snooping statistics dhcpv6-snooping dhcpv6-snooping (in config-vlan context) dhcpv6-snooping authorized-server dhcpv6-snooping external-storage dhcpv6-snooping max-bindings dhcpv6-snooping trust show dhcpv6-snooping show dhcpv6-snooping binding show dhcpv6-snooping statistics