ipxe failes to boot in efi mode due to incomplete ipxe script

Out of the box booting using ipxe ends with kernel panic (see screenshot). It can be worked around by putting

initrd=boot-initrd

to command line option. However I think this should be addressed in the ipxe script template.

Please see
https://forum.ipxe.org/printthread.php?tid=10770
for reference.

Steps to reproduce:

1. Create Hyper-V machine, version 2 (efi). Optional: verify that regular PXE boot works.
2. Mount dvd image from https://boot.ipxe.org/ipxe.iso and set it as a boot defice
3. Commisioning ends with kernel panic.

Default script that does not work:
root@maas:~# curl http://10.0.0.1:5248/ipxe.cfg-00:15:5d:38:01:0f
#!ipxe
kernel http://10.0.0.1:5248/images/ubuntu/amd64/generic/focal/stable/boot-kernel
imgargs boot-kernel nomodeset ro root=squash:http://10.0.0.1:5248/images/ubuntu/amd64/generic/focal/stable/squashfs ip=::::laptop:BOOTIF ip6=off overlayroot=tmpfs overlayroot_cfgdisk=disabled cc:{'datasource_list': ['MAAS']}end_cc cloud-config-url=http://10.0.0.1:5248/MAAS/metadata/latest/by-id/end4q7/?op=get_preseed apparmor=0 log_host=10.0.0.1 log_port=5247 --- BOOTIF=01-${net0/mac}
initrd http://10.0.0.1:5248/images/ubuntu/amd64/generic/focal/stable/boot-initrd
boot
root@maas:~#

What works:

root@laptop:~# cat /var/log/kern.log |grep Command
Jan 9 10:19:14 laptop kernel: [ 0.000000] Command line: boot-kernel nomodeset ro root=squash:http://10.0.0.1:5248/images/ubuntu/amd64/generic/focal/stable/squashfs ip=::::laptop:BOOTIF ip6=off overlayroot=tmpfs overlayroot_cfgdisk=disabled cc:{'datasource_list': ['MAAS']}end_cc cloud-config-url=http://10.0.0.1:5248/MAAS/metadata/latest/by-id/end4q7/?op=get_preseed apparmor=0 log_host=10.0.0.1 log_port=5247 --- initrd=boot-initrd BOOTIF=01-00:15:5d:38:01:0f
root@laptop:~#

Regards!
Michal Kielkowski