CCNA Foundations: DHCPv6 Stateless — SLAAC Plus the Details
Build a compact branch LAN where IPv6 hosts already form SLAAC addresses from router advertisements, then add stateless DHCPv6 to supply DNS server and domain-name. You will keep SLAAC for addressing, flip the RA 'other-config' flag so hosts know to ask, and bind an IPv6 DHCP pool with DNS options to the user LAN. IPv4 is prebuilt as a baseline and must keep forwarding. Verify from hosts and the router’s IPv6 DHCP/ND views.