Hi!
Small script to add DoQ support if you have no ADH. It can be done manually, but I think script will be better 
Notice
It is redundant for devices with Adguard Home, but should not harm you.
#!/bin/sh
echo "Choose an action:"
echo "1) Install DNS over QUIC"
echo "2) Uninstall DNS over QUIC"
read -p "Enter your choice (1 or 2): " choice
case $choice in
1)
echo "Installation selected."
read -p "Enter the DNS over QUIC server name: " doq_server
opkg update
opkg install quiche
echo "server=${doq_server}#53" >> /etc/dnsmasq.conf
/etc/init.d/dnsmasq enable
/etc/init.d/dnsmasq restart
echo "DNS over QUIC setup completed with server ${doq_server}."
;;
2)
echo "Uninstallation selected."
sed -i '/^server=/d' /etc/dnsmasq.conf
opkg remove quiche
/etc/init.d/dnsmasq disable
/etc/init.d/dnsmasq stop
echo "DNS over QUIC setup removed."
;;
*)
echo "Invalid choice. Exiting."
exit 1
;;
esac
How to use it?
Run this commands on your host machine (NOT router):
nano doq.sh
Paste code from above (or use v1 if you want) and save file.
scp -O -r doq.sh [email protected]:/tmp
Enter password
ssh [email protected]
Enter password again
cd /tmp
./doq.sh