These hosts registers the intent to pxe boot but ultimately fall through to HDD boot.
This is presumably not the same issue as T303296 since there's a hack in place for that issue.
It's definitely not the same issue as T303773 since in that case the host DOES pxe boot but fails dhcp during debian install
It's also probably not the same as T293391 since that seems to be a misplaced cable.
