Be able to check off one or more IPv6 DNS upstream servers from DNS settings page.
Mousing over the checkbox turns pointer into blocked icon (see image), checkboxes are disabled.
The only time I have seen this is when you don't have IPv6 address configured when the setup script is run. You may want to check the setupVars.conf file in the /etc/pihole directory if you see:
IPV4_ADDRESS=192.168.10.250/24
IPV6_ADDRESS=
They you haven't setup IPv6 during the setup. To resolve this run the command.
pihole reconfigure
and make sure when it asks about IP addresses you select IPv6 and it has a static address.
The setVars has the ipv6 address. I don't recall if I added it after or not, but all the variables for ipv6 are set to true/yes - I think. Are there additional things I med to check to make sure they're turned on?
For what it's worth, it does ipv6 dns lookups just fine (lookups over ipv6, and also AAAA lookups), using unbound.
What are the outputs of the following (you will want to skip posting the line with your WEBPASSWORD):
cat /etc/pihole/setupVars.conf
cat /etc/pihole/pihole-FTL.conf
vbetoglou@security:~$ cat /etc/pihole/setupVars.conf
BLOCKING_ENABLED=true
TEMPERATUREUNIT=F
ADMIN_EMAIL=@
WEBUIBOXEDLAYOUT=boxed
WEBPASSWORD=*****
DNSMASQ_LISTENING=all
DNS_FQDN_REQUIRED=true
DNS_BOGUS_PRIV=true
DNSSEC=false
CONDITIONAL_FORWARDING=false
PIHOLE_INTERFACE=eno1
IPV4_ADDRESS=192.168.11.2/24
IPV6_ADDRESS=fe80::814d:1f11:e040:a2b2
PIHOLE_DNS_1=127.0.0.1#553
PIHOLE_DNS_2=::1#553
QUERY_LOGGING=true
INSTALL_WEB_SERVER=true
INSTALL_WEB_INTERFACE=true
LIGHTTPD_ENABLED=true
DHCP_ACTIVE=true
DHCP_START=192.168.11.51
DHCP_END=192.168.11.255
DHCP_ROUTER=192.168.11.1
DHCP_LEASETIME=24
PIHOLE_DOMAIN=lan
DHCP_IPv6=true
DHCP_rapid_commit=true
vbetoglou@security:~$ cat /etc/pihole/pihole-FTL.conf
AAAA_QUERY_ANALYSIS=yes
PRIVACYLEVEL=0
Does that look OK? FWIW the system is responding correctly for dig -6 requests to its IPv6 address. My concern is, not being able to check off additional servers as backups.
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