I've been playing with booting CoreOS images via iPXE but not on iron, instead I've been using this http://kimizhang.wordpress.com/2013/08/26/create-pxe-boot-im

I've been playing with booting CoreOS images via iPXE but not on iron, instead I've been using this http://kimizhang.wordpress.com/2013/08/26/create-pxe-boot-image-for-openstack/ http://kimizhang.wordpress.com/2013/08/26/create-pxe-boot-im... technique with a couple OpenStack zones for getting a bare-PXE boot image that makes OpenStack happy. Pro tip: Disable "OpenStack network" DHCP on the subnet you're rolling these instances.