Issue with preseeded install - cannot skip apt media scanning

Hi debian-wizards,

I'm seeking your wisdom, since I'm almost banging my head against the wall...

Any ideas how to get rid of the described error and achieve fully unattended Debian install?

Thanks in advance, any suggestion will be much appreciated!

Jerzy

The issue:

While using preseed file, regardless of any setting, debian installer (dialog) jumps off to interactive mode on error: "Apt configuration problem. An attempt to configure apt to install additional packages from the media failed". This happens just after installing the base system. After pressing continue - apt scans mirror correctly and the rest of the process goes unattended till the end.

Preseed file includes (whole file can be here: http://paste.debian.net/1257950/):

<...>

d-i apt-setup/cdrom/set-first boolean false
d-i apt-setup/cdrom/set-next boolean false
d-i apt-setup/cdrom/set-failed boolean false

apt-cdrom-setup apt-setup/cdrom/set-first boolean false
apt-cdrom-setup apt-setup/cdrom/set-next boolean false
apt-cdrom-setup apt-setup/cdrom/set-double boolean false
apt-cdrom-setup apt-setup/cdrom/set-failed boolean false

<...>

The boot command:

auto=true priority=critical preseed/url="" class="gmail-il">debian-preseed.txt

ISO file used for installation:

debian-cd/current/amd64/iso-cd/debian-11.5.0-amd64-netinst.iso

Additional info:

From https://preseed.einval.com/debian-preseed/bullseye/amd64-main-full.txt

it seems that only apt-setup/cdrom/set-failed should be sufficient:

### Description: Scan extra installation media?
#   An attempt to configure apt to install additional packages from the
#   media failed.
#   .
#   Please check that the media has been inserted correctly.
# d-i apt-setup/cdrom/set-failed boolean true

Unfortunately this does not work :/