I know that systemctl is the new way to do things, but I have some existing scripts that use chkconfig and my understanding was that systemd provides some backwards compatibility with chkconfig. In any case, I double-checked the Fedora 15 Alpha release notes, and nothing mentions chkconfig not working.

My postinstall script sets "chkconfig NetworkManager off", and "chkconfig --list NetworkManager" shows that it is indeed disabled.  However, when I booted the system, NetworkManager was running.  I tried running "systemctl stop NetworkManager.service", and this indeed stopped NetworkManager, but I wasn't able to get the network service to run.  Whether I ran "systemctl start network.service" or "service network start" or even "/etc/init.d/network start", it kept on starting NetworkManager instead of the network service. I eventually tried running "systemctl disable NetworkManager.service", and this finally made the network service available.

Although I was eventually able to get networking to work on this machine, it was very frustrating that the "chkconfig NetworkManager off" command was ignored and that "/etc/init.d/network start" magically ignored the /etc/init.d/network script and started NetworkManager instead.