RA server is active but DHCP is disabled along with IPv6 on all interfaces.

[Cool_Corona]

When trying to change subnet on LAN interface, I get this error and I cant change it.

Why??

[Dave R2]

@cool_corona It's a known issue. Temporarily enable ipv6 on the LAN interface and give it IPv6 of ::1. Hit save/apply and then go into Services -> DHCP6 Server & RA and disable the RA service there. Then go back to Interfaces -> Lan and undo the IPv6 settings.

[Cool_Corona]

@dave-r2

Totally bricked the FW.

Had to reinstall and restore config.

Problem solved.

[Gertjan]

@cool_corona

Try this the next time :
Console access - or SSH.
Use option 15.
Pick the saved config that was known to be good.
Restore.
Reboot.
Done.

The last xx config backup can be found here : /cf/conf/backup/