IPv6 DNS via DHCP6

I can’t seem to understand how to get DHCP6 to advertise the router itself as a DNS server.

If I turn on ND DNS I get all the dynamic servers my ISP is giving me, which is not what I want.

If I turn that OFF I get the IPV4 DNS server from normal DHCP, which does what I want (use the router as a cache/static override) but isn’t using IPv6.

[admin@basement-router] /ipv6 dhcp-server> export
# jan/20/2021 17:45:57 by RouterOS 6.48
# software id = AICP-V6XM
#
# model = RB4011iGS+5HacQ2HnD
# serial number = A28209471D38
/ipv6 dhcp-server option
add code=23 name=dnsserver value="'fe80::ba69:f4ff:fedf:f186'"
/ipv6 dhcp-server
add dhcp-option=dnsserver interface=bridge name=dhcp6

Am I missing something? I wish ND would let me override what it’s going to send out, it works perfectly.

You have to enable the “other” flag in the ND settings in order for the devices to know to request the DNS servers via DHCPv6.