Openwrt Disable IPv6

The following steps will disable IPV6 on your OpenWrt router . All the steps are performed via the command line. You can performe them in the console of the router but the preferred way is via SSH.

Follow the following steps to disable IPV6 on your OpenWrt 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 

Disable RA and DHCPv6 so no IPv6 IPs are handed out:

uci -q delete dhcp.lan.dhcpv6
uci -q delete dhcp.lan.ra
uci commit dhcp
/etc/init.d/odhcpd restart 

You can now disable the LAN delegation:

uci set network.lan.delegate="0"
uci commit network
/etc/init.d/network restart

You might as well disable odhcpd:

/etc/init.d/odhcpd disable
/etc/init.d/odhcpd stop 

And finally you can delete the IPv6 ULA Prefix:

uci -q delete network.globals.ula_prefix
uci commit network
/etc/init.d/network restart