Disable all IPv6

1. In AdGuard homepage go to DNS settings, under DNS server configuration section

• Check Disable IPv6 option

2. Open to unbound config file :

sudo nano /etc/unbound/unbound.conf.d/unbound.conf

• Go to line 18 and set do-ip6: yes to do-ip6: no

3. Open to stubby config file :

cd /etc/stubby/ && sudo rm stubby.yml && sudo nano stubby.yml

• comment the lines 246 to 249

4. Open cloudflared config file:

sudo nano /etc/default/cloudflared

• Delete --upstream https://2606:4700:4700::1111/dns-query --upstream https://2606:4700:4700::1001/dns-query

5. Open AcrylicConfiguration.ini file (Windows):

C:\Program Files (x86)\Acrylic DNS Proxy

• Set SinkholeIPv6Lookups=No

6. Go to https://www.dynu.com/en-US/ControlPanel/DDNS and select Manage your hostname(pencil under actions) and turn off Wildcard IPv6 Alias & Enable IPv6 Address

7. In WireGuard, do not set fe80::1/0 in AllowedIPs

Reboot pi