We have some servers that's currently running sourcebans and have been without issue for sometime, now lately we're getting this error after a while (seems to be different each time), and we also had a buggy response from one server where the admin files just refused to load and no admins had any powers at all.
Warning: mysqli_real_connect(): (HY000/1129): Host 'xxxx' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' , we got this again from the site
Is the error we are getting.
On the server we can see this error
2020-02-15 2:37:27 208388 [Warning] Aborted connection 2083880 to db: <database> user: <user>: host: <host> (Got an error reading communication packets)
These happens 7,665 times an hour.