Doing a PXE/kickstart/NFS install of rawhide from 20070222. The loopback device is not configured. This prevents me from mounting an nfs directory in %post because the mount.nfs command tries to contact the local portmap server via the loopback address.
David - looks like lo is configured, but not brought up. Similar to other issues we've had with regular interfaces. Orion - for now you should be able to work around this with a quick "ifconfig lo up" at the beginning of your %post script.
Yeah, the netlink API is not friendly past kernel 2.6.17. Rewrote initLoopback() to use ioctl() and it's working now.