Rsyslog instead syslogd on OpenBSD

Syslogd has a couple of quirks, e.g. it does not add its hostname / IP to the syslog information.

Rsyslog is the standard in the Linux world, and it's available in the OpenBSD ports as well via the package manager.

pkg_add rsyslog
rcctl disable syslogd
rcctl enable rsyslogd
/etc/rc.d/rsyslogd start

Then just configure Rsyslog.