RA not sent for PD

[timriker]

odhcp6c - 2023-05-12-bcd28363-20
odhcpd-ipv6only - 2023-10-24-d8118f6e-1

Log shows this:

Thu Sep 26 16:59:12 2024 daemon.info odhcpd[7832]: Address 2607:fa18:9ffe::1 (dprefix 0, valid 8617466) not suitable as RA route on lan

root@gw-xm-wr1200:~# ip a sh br-lan
15: br-lan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
    link/ether 00:01:9f:0a:1a:ec brd ff:ff:ff:ff:ff:ff
    inet 192.168.12.1/24 brd 192.168.12.255 scope global br-lan
       valid_lft forever preferred_lft forever
    inet 166.70.97.193/29 brd 166.70.97.199 scope global br-lan
       valid_lft forever preferred_lft forever
    inet6 2607:fa18:9ffe::1/56 scope global dynamic noprefixroute
       valid_lft 2578115sec preferred_lft 590915sec
    inet6 fe80::201:9fff:fe0a:1aec/64 scope link
       valid_lft forever preferred_lft forever

config dhcp 'lan'
        option interface 'lan'
        option start '100'
        option limit '150'
        option dhcpv4 'server'
        option leasetime '12h'
        option ra 'server'
        option dhcpv6 'server'
        option ra_default '2'

Why does it think that 2607:fa18:9ffe::1 is not suitable?

It looks like SLAAC and/or "auto" systems do get a route, but dhcpv6 systems do not. Perhaps the error log is not stopping RA packets?