Xtrabackup phoning home?

We use Percona XtraBackup but have noticed some unexpected activity on the firewall. It appears to be trying to “phone home”. Does anyone know what this request is doing and is there a way to turn it off?

Thanks

Apparently, it’s looking for updates. See the code around line 776…

https://github.com/percona/percona-xtrabackup/blob/bead1d13147b6076f7a8b698e415b32eb28d8678/storage/innobase/xtrabackup/src/version_check.pl