Devs,
ipset was updated after a recent minor bug with save was fixed. The updated
package was installed today. Restarting fails with an error code due to:
May 16 14:14:31 valkyrie ipset[62200]: ipset v7.21: Set cannot be destroyed:
it is in use by a kernel component
May 16 14:14:31 valkyrie systemd[1]: ipset.service: Control process exited,
code=exited, status=1/FAILURE
It just means that there is a reference to one of the sets.
E.g. in your running iptables / firewall
Don't think this is a bug of ipset, but rather of running config.
Suggest you try to shut down firewalld/iptables prior to stopping ipset