My ipset hash is full!? I’m using Ubuntu Server and I created a separate fail2ban jail that uses “iptables-ipset-proto6-allports” as their ban action (thus using ipset instead of iptables).

However, today I seem to hit the limit: stderr: 'ipset v7.15: Hash is full, cannot add more elements'.

This can be confirmed by running the ipset -t list command:

Name: f2b-manual
Type: hash:ip
Revision: 5
Header: family inet hashsize 32768 maxelem 65536 timeout 0 bucketsize 12 initval 0xbc28aef1
Size in memory: 2605680
References: 1
Number of entries: 65571

Where the 65571 entries exceeds the maxelem (65536). So what now?? Could I create a banlist in a txt file or something? I just want to ban some large tech corps: https://gitlab.melroy.org/-/snippets/619