Description of Problem: pppd daemon doesn't start at all. It can't find correct ppp modules in 2.4 kernel supplied with rh-71. With old 2.2 kernels everything works fine. How Reproducible: just try to start pppd
I bet this one will need much more information on what errors you get, what package versions you have installed, etc. etc.
Please verify this with a newer version of Red Hat Enterprise Linux or Fedora Core and reopen it against the new version if it still occurs. Closing as "not a bug" for now.