openwrt guide
From thelinuxwiki
changing network setting
Edit /etc/config/network directly
Run /etc/init.d/network restart
disabling ipv6
uci set 'network.lan.ipv6=off' uci set 'network.wan.ipv6=off' uci set 'dhcp.lan.dhcpv6=disabled' /etc/init.d/odhcpd disable uci commit
