I'm not sure anyone actually maintains this package, but here goes... The current kernel in rawhide no longer supports ext2 built-in. So the initrd that netboot has been using no longer works. The long term solution is to do what a "normal" boot does, use an initramfs. Included file changes the build script to create an initramfs instead of an initrd. (Bug 210773 and bug 210774 can probably be closed with this change aswell)
Created attachment 159624 [details] initramfs.patch
As you cannot pivot over rootfs, you need to do something like this in the startup script: exec /sbin/switch_root -c /dev/console /mnt /sbin/init
Trying to track down proper system-config-netboot maintainer.
How's that hunting going, Jesse? :)
fleite actually owns this. Not me.
fixed in 0.1.42