To be clear, the idea of using MAAS on Xenial was in order to test if the newly-modified iPXE (on Bionic) can support iSCSI boot.
But come to think of it, I don't think that's a good test. If I remember correctly, MAAS used TFTP to transfer the kernel and initrd, /then/ iSCSI was used in order to mount the rootfs. So iPXE's iSCSI functionality wouldn't be exercised in this case.
Sorry for the confusion.
To be clear, the idea of using MAAS on Xenial was in order to test if the newly-modified iPXE (on Bionic) can support iSCSI boot.
But come to think of it, I don't think that's a good test. If I remember correctly, MAAS used TFTP to transfer the kernel and initrd, /then/ iSCSI was used in order to mount the rootfs. So iPXE's iSCSI functionality wouldn't be exercised in this case.