An edge router sends Router Advertisements with the M flag set to 0 and the O flag set to 1. What behavior should hosts on that LAN exhibit?

The M (Managed) flag and O (Other) flag in Router Advertisements (RAs) control how IPv6 hosts obtain configuration. When the M flag is 0, it indicates that hosts should not use DHCPv6 for address assignment, but rather use Stateless Address Autoconfiguration (SLAAC). When the O flag is 1, it signals that additional configuration information, beyond what SLAAC provides (like DNS server addresses), is available via DHCPv6. Therefore, hosts will autoconfigure their IPv6 addresses using SLAAC and then query a DHCPv6 server for other parameters. The option stating hosts ignore DHCPv6 entirely is incorrect because the O flag is set. The option stating hosts use DHCPv6 for addresses is incorrect because the M flag is 0. The RDNSS option can deliver DNS, but the O flag still indicates DHCPv6 is available for other configuration, making the general statement about RDNSS always delivering DNS regardless of the O flag too broad and potentially misleading in this specific context.