Zarif2000

As I was telling earlier, I used sysctl file. Sounds logical. And as far as I don't want to face with strange errors in a future, I'll let ipv6 in normal state.

Can you provide step-by-step guide please? Should I edit /boot/armbianEnv.txt ?

My ISP doesn't provide ipv6. And also I user ip6tables and configured default policies on Armbian: ip6tables -P INPUT DROP ip6tables -P OUTPUT DROP ip6tables -P FORWARD DROP But I can't find out how to disable it completely. I tried to add these lines to sysctl net.ipv6.conf.all.disable_ipv6=1 net.ipv6.conf.default.disable_ipv6=1 net.ipv6.conf.lo.disable_ipv6=1 not working! Next idea is to disable ipv6 via grub. But there is no /etc/default/grub file on Armbian.

Hello. I faced with a problem, I can't disable ipv6 completely on Armbian 23.05.1. Orange Pi PC. Tried to use armbian-config to disable ipv6 in Network menu, but no luck, apps can use it at the moment netstat -tulpn | grep ::: gives me udp6 0 0 :::53 :::* 1134/pihole-FTL udp6 0 0 :::111 :::* 1/init Thanks in advance.