[CentOS] CnetOS 7, hostname, and rsyslogd

A current system, but this has been happening since I built this box last
fall: the system gets its name via DHCP, not from a hostname file. On
reboot, such as after a yum update, it *appears* as though rsyslogd is
started before the network is up, and so it doesn't have its hostname
yet... so /var/log/messages shows the hostname as localhost. If I restart
rsyslogd, and everything's fine.

Has anyone else seen this behaviour?

      mark