pfSense

Current
Select the Operating Mode for the Router Advertisement (RA) Daemon. Use:
Router Only to only advertise this router
Unmanaged for Router Advertising with Stateless Autoconfig
Managed for assignment through a DHCPv6 Server
Assisted for DHCPv6 Server assignment combined with Stateless Autoconfig. It is not required to activate this DHCPv6 server when set to "Managed", this can be another host on the network

Suggested

Select the Operating Mode for the Router Advertisement (RA) Daemon.

Disabled
RADVD will not be enabled on this interface.

Router Only -    RA Flags [none],                    Prefix Flags [router]
Will advertise this router.

Unmanaged -      RA Flags [none],                    Prefix Flags [onlink, auto, router]
Will advertise this router with stateless autoconfig.

Managed -        RA Flags [managed, other stateful], Prefix Flags [onlink, router]
Will advertise this router with all configuration through a DHCPv6 server.

Assisted -       RA Flags [managed, other stateful], Prefix Flags [onlink, auto, router]
Will advertise this router with configuration through a DHCPv6 server and/or stateless autoconfig.

Stateless DHCP - RA Flags [other stateful],          Prefix Flags [onlink, auto, router]
Will advertise this router with stateless autoconfig and other configuration information available via DHCPv6.