Refer to the exhibit. Reachability between servers in a network deployed with DHCPv6 is unstable. Which command must be removed from the configuration to make DHCPv6 function?
A.
ipv6 nd ra suppress
B.
address prefix 2001:0:1:4::/64 lifetime infinite infinite
In IPv6, hosts locate a router through Router Advertisement (RA) messages sent from routers instead of by DHCP; IPv6-enabled routers that support dynamic address assignment are expected to announce themselves on the network to all clients. As such, DHCPv6 does not include any gateway information
Just figured it out.
With DHCPv6, currently there is no equivalent of the "default-router" option as in DHCPv4. The following draft describes a way to handle this with DHCPv6, but it's currently not implemented:
http://tools.ietf.org/html/draft-ietf-mif-dhcpv6-route-option-04
Also see section 5.5.2 (Absence of Router Advertisements) in RFC 4862. Basically, the assumption is that the dhcp client still needs to learn the gateway through RA, so you still need to enable RA on the router.
https://community.cisco.com/t5/ipv6/dhcpv6-problem/td-p/1971648
OPTION A CORERCT:
https://www.networkacademy.io/ccna/ipv6/stateful-dhcpv6#:~:text=Configuring%20a%20Cisco%20router%20as%20a%20Stateful%20DHCPv6%20server&text=We%20must%20create%20a%20new,servers%2C%20and%20a%20domain%20name.
upvoted 1 times
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