How to disable ipv6 system-wide?

Support
8

I’m not in front of a pc now but I’m going to check later.
In the meanwhile you could revert the changes to make cockpit work again.

Could you please share the exact error you get with ipv6?

Does your WAN connection use an ipv6 address?

Do you use an IPv6 router? You may try to disable ipv6 there too.