Bug#1035349: marked as done (regression: 'hostname' preseed alias for netcfg/get_hostname takes precedence over DHCP hostname)
Your message dated Wed, 03 May 2023 06:21:24 +0000
with message-id <E1pu5rg-0042J9-8W@fasolo.debian.org>
and subject line Bug#1035349: fixed in preseed 1.116
has caused the Debian Bug report #1035349,
regarding regression: 'hostname' preseed alias for netcfg/get_hostname takes precedence over DHCP hostname
to be marked as done.
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1035349: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1035349
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--- Begin Message ---
Source: preseed
Version: 1.115
Severity: important
Tags: d-i
Dear Maintainer,
This bugreport is a subset/related-to bug #1031643, also in preseed.
When the 'hostname' preseed alias for 'netcfg/get_hostname' is provided to
Bookworm's RC 2 installer as a kernel command-line argument, the value that
it contains unexpectedly takes higher precedence over a hostname received from
DHCP, contrary to the Installation Guide documentation[1] in combination with
the corresponding netcfg documentation[2].
Conditions:
* Preseed alias 'hostname' configured on the kernel command-line
* There is a DHCP server on the installation-target's network that will provide a hostname
Expected behaviour:
* Installer does not ask for installation-target hostname
* Installation-target hostname is received and configured using DHCP
Actual behaviour:
* [good] Installer does not ask for hostname
* [bad] Hostname is configured from the command-line, ignoring the DHCP-negotiated hostname.
* This is similar to 'netcfg/hostname' -- a different setting from 'netcfg/get_hostname'.
Context:
Since Linux 6.0, a 'hostname=...' parameter provided in the kernel command-line
is no-longer loaded into the init process environment as a variable, but is
instead used to set the hostname of the running system (skipping the
need for userspace tooling to achieve that).
That caused a conflict for the preseed aliases in the Debian Installer, because
one of the aliases is also 'hostname', mapped to 'netcfg/get_hostname'.
The fix applied in #1031643 loads the 'running system hostname' into the
environment if it is non-empty and not equal to '(none)'. This allows
unattended installs to work again.
The 'netcfg' component that determines the system hostname (prompting for it
from the operator if required) to be installed will prefer a non-empty hostname
(as long as it is not the literal string '(none)') over one provided by DHCP
in this block of code: https://sources.debian.org/src/netcfg/1.185/dhcp.c/#L578
Thanks,
James
[1] - https://www.debian.org/releases/stable/amd64/apbs02.en.html#preseed-aliases
[2] - https://sources.debian.org/src/netcfg/1.185/debian/netcfg-common.templates/?hl=145#L160
--- End Message ---
--- Begin Message ---
Source: preseed
Source-Version: 1.116
Done: Cyril Brulebois <kibi@debian.org>
We believe that the bug you reported is fixed in the latest version of
preseed, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 1035349@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Cyril Brulebois <kibi@debian.org> (supplier of updated preseed package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Wed, 03 May 2023 07:20:10 +0200
Source: preseed
Architecture: source
Version: 1.116
Distribution: unstable
Urgency: medium
Maintainer: Debian Install System Team <debian-boot@lists.debian.org>
Changed-By: Cyril Brulebois <kibi@debian.org>
Closes: 1035349
Changes:
preseed (1.116) unstable; urgency=medium
.
[ Cyril Brulebois ]
* env2debconf: if hostname is set, keep propagating it (see previous
changelog entry) but also reset it to the default “(none)” value so
that netcfg considers DHCP-provided hostnames. This restores the
longstanding semantics, i.e. defining a fallback instead of taking
priority (Closes: #1035349).
.
[ Updated translations ]
* Georgian (ka.po) by Temuri Doghonadze
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--- End Message ---
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