DHCPDv6 and fixed hosts, not appearing in logs

[sillysausage]

I fixed the problem!

It seems DHCPv6 was only sending RA packets not any DHCPv6 type.

The trick was to upgrade to dhcpcd 6.9.3 or use ipv6ra_accept_nopublic
in dhcpcd.conf.

I used this configuration /etc/dhcpcd.conf

authoritative;
ddns-update-style interim;

shared-network home {
  subnet6 2001:0db8:1234:0001::/64 {
    range6 2001:0db8:1234:0001::10 2001:0db8:1234:0001::240;
    range6 2001:0db8:1234:0001:: temporary;
    option dhcp6.name-servers 2001:0db8:1234:0001::1;
    option dhcp6.sntp-servers 2001:0db8:1234:0001::1;
    allow unknown-clients;
  }

  subnet6 fde4:8dba:82e1:ffff::/64 {
    range6 fde4:8dba:82e1:ffff::10 fde4:8dba:82e1:ffff::240;
    range6 fde4:8dba:82e1:ffff:: temporary;
    option dhcp6.name-servers 2001:0db8:1234:0001::1;
    option dhcp6.sntp-servers 2001:0db8:1234:0001::1;
    ignore unknown-clients;
  }
}

host Gaming_Computer {
  hardware ethernet 00:53:00:FF:FF:11;;
  host-identifier option dhcp6.client-id <YOUR_DUID>;
  fixed-address6 2001:0db8:1234:0001::20;
  fixed-prefix6 2001:0db8:1234:0001::/64;
  option dhcp6.name-servers 2001:0db8:1234:0001::1;
  option dhcp6.sntp-servers 2001:0db8:1234:0001::1;
}

host Linux Workstation {
  hardware ethernet 00:53:00:FF:FF:22;;
  host-identifier option dhcp6.client-id <YOUR_DUID>;
  fixed-address6 fde4:8dba:82e1:ffff::21;
  fixed-prefix6 2001:0db8:1234:0001::/64;
  option dhcp6.name-servers 2001:0db8:1234:0001::1;
  option dhcp6.sntp-servers 2001:0db8:1234:0001::1;
}

/etc/radvd.conf

interface eth0 {

  # We are sending advertisements (route)
  AdvSendAdvert on;

  # When set, host use the administered (stateful) protocol
  # for address autoconfiguration. The use of this flag is
  # described in RFC 4862
  AdvManagedFlag on;

  # When set, host use the administered (stateful) protocol
  # for address autoconfiguration. For other (non-address)
  # information.
  # The use of this flag is described in RFC 4862
  AdvOtherConfigFlag on;

  # Suggested Maximum Transmission setting for using the
  # Hurricane Electric Tunnel Broker.
  # AdvLinkMTU 1480;

  # We have native Dual Stack IPv6 so we can use the regular MTU
  AdvLinkMTU 1500;

  prefix 2001:0db8:1234:0001::/64 {
    AdvOnLink on;
    AdvAutonomous off;
    AdvRouterAddr on;
  };

  # RDNSS 2001:0db8:1234:0001::1 {
  # };
  # DNSSL example.id {
  # };
};