How to disable ipv6 on OpenWRT?

Question

Computer networks

There is a router on OpenWrt Chaos Calmer r41887.
The assembly already had active ipv6. I don’t see the option to turn it off at point-blank range and I suspect that it is necessary to change the assembly. really do without it?

Reasons for shutdown - at first stupid AD, x now the 1C server is lying

Answer 1

Two options, in this case for eth0:
Permanent
Temporary (until reboot)
p.s. better late than never ;)?

Answer 2

yes, I accidentally ran into at night where to turn it off in the web interface)