A continuación se muestran los comandos que es necesario ejecutar en OpenWrt para poder deshabilitar la configuración de IPv 6 en el router.
uci set 'network.lan.ipv6=0'
uci set 'network.wan.ipv6=0'
uci set 'dhcp.lan.dhcpv6=disabled'
/etc/init.d/odhcpd disable
uci commit
uci -q delete dhcp.lan.dhcpv6
uci -q delete dhcp.lan.ra
uci commit dhcp
/etc/init.d/odhcpd restart
uci set network.lan.delegate="0"
uci commit network
/etc/init.d/network restart
/etc/init.d/odhcpd disable
/etc/init.d/odhcpd stop
uci -q delete network.globals.ula_prefix
uci commit network
/etc/init.d/network restart
Referencia: https://3os.org/infrastructure/openwrt/disable-ipv6/