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Hi!
How about disabeling Unbound and entering your preferred DNS IP to the DHCP config page?
Do you mean that download speed fluctuates quickly over time?
If so, you may experience bufferbloat, especially because your upstream and downstream speeds differ so much. Try this or this to check.
If this is indeed the problem, you can refer to this page and there is also a step-by-step guide for OpnSense.
On OpnSense, the resulting dhcp6c configuration is in /var/etc/dhcp6c.conf, you can check if it is like the one on your pfSense.
For LAN interfaces with RA enabled, you can check if /var/etc/radvd.conf contains the correct definitions (you did configure the router advertisements, did you?).
The order is:
1. get a delegated prefix on WAN of the correct size (in your case, /56) - regardless if the WAN itself gets an IPv6,
2. assign a part of it to each of your LAN interfaces via a different prefix ID (at most 8 bits) and
3. have that prefix advertised via RA or DHCPv6.
interface igb0 {
send ia-na 0; # request stateful address
send ia-pd 0; # request prefix delegation
request domain-name-servers;
request domain-name;
script "/var/etc/dhcp6c_wan_script.sh"; # we'd like some nameservers please
};
id-assoc na 0 { };
id-assoc pd 0 {
prefix ::/56 infinity;
prefix-interface igb1 {
sla-id 6;
sla-len 8;
};
prefix-interface igb2 {
sla-id 7;
sla-len 8;
};
};whereas OPNsense hasinterface igb0 {
send ia-na 0; # request stateful address
send ia-pd 0; # request prefix delegation
request domain-name-servers;
request domain-name;
script "/var/etc/dhcp6c_wan_script.sh"; # we'd like some nameservers please
};
id-assoc na 0 { };
id-assoc pd 0 {
prefix-interface igb2 {
sla-id 7;
sla-len 8;
};
prefix-interface igb1 {
sla-id 6;
sla-len 8;
};
};
<wan>
<enable></enable>
<if>igb0</if>
<blockbogons></blockbogons>
<descr><![CDATA[WAN]]></descr>
<spoofmac></spoofmac>
<alias-address></alias-address>
<alias-subnet>32</alias-subnet>
<blockpriv></blockpriv>
<ipaddr>dhcp</ipaddr>
<dhcphostname></dhcphostname>
<dhcprejectfrom></dhcprejectfrom>
<adv_dhcp_pt_timeout></adv_dhcp_pt_timeout>
<adv_dhcp_pt_retry></adv_dhcp_pt_retry>
<adv_dhcp_pt_select_timeout></adv_dhcp_pt_select_timeout>
<adv_dhcp_pt_reboot></adv_dhcp_pt_reboot>
<adv_dhcp_pt_backoff_cutoff></adv_dhcp_pt_backoff_cutoff>
<adv_dhcp_pt_initial_interval></adv_dhcp_pt_initial_interval>
<adv_dhcp_pt_values>SavedCfg</adv_dhcp_pt_values>
<adv_dhcp_send_options></adv_dhcp_send_options>
<adv_dhcp_request_options></adv_dhcp_request_options>
<adv_dhcp_required_options></adv_dhcp_required_options>
<adv_dhcp_option_modifiers></adv_dhcp_option_modifiers>
<adv_dhcp_config_advanced></adv_dhcp_config_advanced>
<adv_dhcp_config_file_override></adv_dhcp_config_file_override>
<adv_dhcp_config_file_override_path></adv_dhcp_config_file_override_path>
<ipaddrv6>dhcp6</ipaddrv6>
<dhcp6-duid></dhcp6-duid>
<dhcp6-ia-pd-len>8</dhcp6-ia-pd-len>
<dhcp6-ia-pd-send-hint></dhcp6-ia-pd-send-hint>
<dhcp6usev4iface></dhcp6usev4iface>
<dhcp6withoutra></dhcp6withoutra>
<adv_dhcp6_prefix_selected_interface>wan</adv_dhcp6_prefix_selected_interface>
/</wan>2023-11-05T18:13:55-06:00 Notice dhcp6c reset a timer on igb0, state=SOLICIT, timeo=30, retrans=109080
2023-11-05T18:13:55-06:00 Notice dhcp6c send solicit to ff02::1:2%igb0
2023-11-05T18:13:55-06:00 Notice dhcp6c set IA_PD
2023-11-05T18:13:55-06:00 Notice dhcp6c set IA_PD prefix
2023-11-05T18:13:55-06:00 Notice dhcp6c set option request (len 4)
2023-11-05T18:13:55-06:00 Notice dhcp6c set elapsed time (len 2)
2023-11-05T18:13:55-06:00 Notice dhcp6c set identity association
2023-11-05T18:13:55-06:00 Notice dhcp6c set client ID (len 14)
OPNsense only stores the DUID in the config if you explicitly enter one. Otherwise, dhcp6c uses the DUID it generated itself, which is stored in /var/db/dhcp6c_duid.
Might be the same in pfSense.