Cisco 300-410 Question Answer
What is the purpose of the DHCPv6 Guard?
It messages between a DHCPv6 server and a DHCPv6 client ( or relay agent).
It shows that clients of a DHCPv5 server are affected.
It block DHCPv6 messages from relay agents to a DHCPv6 server.
It allows DHCPv6 replay and advertisements from (rouge) DHCPv6 servers.
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6_fhsec/configuration/xe-16/ip6fxe-
16-book/ip6-dhcpv6-guard.html
TESTED 20 Oct 2025
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