mjhjmtu

i'm having the problem getting a DHCP ip from the network on an ubuntu image i created with debootstrap.

What I did:

First i created a system using debootstrap

sudo debootstrap --variant=minbase --arch=amd64 bionic /tmp/src

Then I customize that system for my needs and create a squashfs file from this

mksquashfs /tmp/src bionic.sqsh -noappend -progress -comp xz

After this I create an image file with a single FAT32 partition.

dd if=/dev/zero of=/tmp/image.img bs=1M count=1400

Then I mount that image via losetup.
...

Since I want to boot in UEFI mode I put the EFI binaries into the image, created a grub.cfg and copied the squashfs file into the image.

...

The folder structure of the image now looks like this

├── boot
│   └── grub
│   ├── fonts
│   │   └── unicode.pf2
│   ├── grub.cfg
│   ├── grubenv
│   ├── locale
│   │   ├── ...
│   └── x86_64-efi
│   ├── ...
├── EFI
│   └── BOOT
│   ├── BOOTX64.EFI
│   ├── grub.cfg
│   ├── grubx64.efi
│   └── mmx64.efi
└── bionic.sqsh

The contents of the grub.cfg

search.fs_uuid 6408-05CA root
insmod squash4
insmod loopback
set linux_gfx_mode=keep
set gfxpayload="keep"
set vt_handoff=vt.handoff=7
export linux_gfx_mode
loopback loop /bionic.sqsh
prefix=/boot/grub
linux (loop)/vmlinuz root=UUID=6408-05CA loop=/bionic.sqsh ro
initrd (loop)/initrd.img
boot

Then I copy the image onto a usb stick.

Now I'm ready to boot, and the created image also boots.

But the one thing that doesn't work is the NetworkMananger. It doesn't assign any ip to the ethernet interface.

I can bring up the network by manually executing `dhclient eno1'. But this is not what I want, since the NetworkManager should assign a DHCP IP automatically at boot.

You can see the full NetworkManager log at pastebin

I hope I posted the neccesary infos so someone can give me a hint on what's going wrong.

Many thanks in advance for any help.