@BastilleBSD Mostly harmless, but you should be aware it also switches off DNS lookups for Match Host directives.UseDNS Specifies whether sshd(8) should look up the remote host name, and to check that the resolved host name for the remote IP address maps back to the very same IP address.If this option is set to no, then only addresses and not host names may be used in ~/.ssh/authorized_keys from and sshd_config Match Host directives. The default is “yes”.