Install Bind DNS on Ubuntu 22.10 with edits to interfaces:
============================================================
This will set up bind DNS server so I can use this as my local dns server.

1. I must have a static IP address. Also recommended to set DHCP reserved address for this device.

2. sudo apt-get install bind9 dnsutils

3. Edit:
sudo nano /etc/bind/named.conf.options,
enable the forwarders section, and add your preferred DNS servers:
-----------------------
forwarders {
	9.9.9.9;
    2620:fe::fe;
};
--------------------------
Use Ctril + X to save/close.

4. sudo service bind9 restart

5. Can test bind server by:
dig -x 127.0.0.1
and
nslookup www.nintendo.com

6. You can now set clients to your server and it will have dns with ipv4 & ipv6 with nssec-validation.

7. If you want local hosts to use this, you will need to edit the /etc/netplan/00-installer-config.yaml file and replace all of it to this (with your systems and network ipv4 and ipv6 address got form ifconfig) Keep the name severs as the loopback addresses..
---------------------------------------------
network:
  ethernets:
    enp3s0:
      addresses:
        - 192.168.0.29/24
        - "fddd:1194:1194:1194::1/64"
      routes:
                - to: default
                  via: 192.168.0.1
                - to: default
                  via: ::/0
      nameservers:
          addresses:
            - 172.0.0.1
            - "::1"
  version: 2

---------------------------------------
and save it!
Then use command:
sudo netplan generate
to apply new interfaces!.
Also run
sudo resolvconf -d enp3s0
sudo resolvconf -a enp3s0
to update your dns list!

8. If you have OpenVPN server, edit its settings file (/etc/openvpn/server/server.conf)
and replace the the dns optijnns with these:
push "dhcp-option DNS 172.0.0.1"
push "dhcp-option DNS ::1"

and then
sudo systemctl restart openvpn

to apply it.

9. Also if you are using pi hole, add the link local addresses to the dns source list!.


Sources:
https://linuxconcept.com/installing-the-dns-server-on-ubuntu/
https://serverfault.com/questions/573465/what-is-an-open-dns-resolver-and-how-can-i-protect-my-server-from-being-misused
https://stackoverflow.com/questions/19432026/how-do-i-edit-resolv-conf
https://unix.stackexchange.com/questions/618683/change-resolv-conf
https://askubuntu.com/questions/1128536/how-to-make-persistent-changes-to-etc-resolv-conf-ubuntu-18-10
https://www.cisco.com/c/en/us/support/docs/ip/ip-version-6-ipv6/113328-ipv6-lla.html
https://askubuntu.com/questions/1042582/how-to-set-default-route-with-netplan-ubuntu-18-04-server-2-nic
https://www.linode.com/community/questions/22917/gateway4gateway-6-are-deprecated-how-do-i-configure-a-64-ipv6-range
https://www.serverlab.ca/tutorials/linux/administration-linux/how-to-configure-networking-in-ubuntu-20-04-with-netplan/


Date: February 15th 2023