When a host on a given VLAN is configured to acquire configuration settings from a DHCPv6 server, it transmits a DHCPv6 request on the VLAN. If there is no DHCPv6 server on the VLAN, you can route the host request to a server on another VLAN by enabling a DHCPv6-relay on the routing switch and configuring a helper address on the VLAN.

The settings in the managed-config-flag and other-config-flag RA options override an enabled DHCPv6 option in a host on the VLAN.