Final answer:
In stateless DHCPv6, the DHCPv6 server only provides DNS server information to the client/host. IPv6 addresses are generated by the clients themselves through Stateless Address Autoconfiguration, and subnet masks and default gateways are not part of DHCPv6.
Step-by-step explanation:
In stateless DHCPv6, the DHCPv6 server does not provide an IPv6 address to the client/host. Instead, IPv6 addresses are typically generated by the clients themselves using a mechanism called Stateless Address Autoconfiguration (SLAAC). The main role of the DHCPv6 server in the stateless configuration is to supply other configuration details. Specifically, option c) Only DNS server information is the correct answer. The DHCPv6 server delivers additional information such as the addresses of DNS servers, which the client can use for name resolution. It does not provide a subnet mask because IPv6 does not use traditional subnet masks; the prefix length serves a similar purpose and is typically advertised through Router Advertisements (RA) messages independent of DHCPv6. The default gateway is also obtained from RA messages, not DHCPv6.