configure ip-security dhcp-snooping information check

This command enables the checking of the server-originated packets for the presence of option 82. In some instances, a DHCP server may not properly handle a DHCP request packet containing a relay agent option. Use this command to prevent DHCP reply packets with invalid or missing relay agent options from being forwarded to the client. With checking enabled, the following checks and actions are performed:

• When the option 82 is present in the packet, the MAC address specified in the remote-ID sub-option is the switch system MAC address. If the check fails, the packet is dropped.

• When option 82 is not present in the packet, the DHCP packet is forwarded with no modification.