Final answer:
Stateless DHCPv6 servers provide optional configurations such as DNS settings, but the statement that they provide only optional information is false since they do not provide IP addresses, which is done by SLAAC.
Step-by-step explanation:
The statement that stateless DHCPv6 servers pass out only optional information is false. Stateless DHCPv6 servers provide optional configurations and settings but not the IP address itself. The IP address is automatically generated by the client using Stateless Address Autoconfiguration (SLAAC). Optional configurations may include information such as DNS server addresses and domain search lists that are not critical to the network communication but can assist in network usage and integration.