Under Gentoo the (verbose) output claims to stop a pid, which isn't the case:
$ sudo rc-service unbound reload
* Executing: /usr/libexec/rc/sh/openrc-run.sh /etc/init.d/unbound reload
* Checking unbound configuration ... [ ok ]
* Reloading unbound ...
* Will stop PID 443520
* Sending signal 1 to PID 443520 ...
Under Gentoo the (verbose) output claims to stop a pid, which isn't the case: