Ubuntu
debian-installer package

Ignore DHCP hostname if name is specified in kernel command line

Bug #704768 reported by jhansonxi on 2011-01-19

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	debian-installer (Ubuntu)	New	Undecided	Unassigned

Bug Description

Binary package hint: debian-installer

Ubuntu 10.04 (Lucid Lynx) i386/amd64
debian-installer from Minimal CD ISO
https://help.ubuntu.com/community/Installation/MinimalCD

A hostname is specified using the hostname alias on the kernel command line as per the Debian manual:
http://d-i.alioth.debian.org/manual/en.i386/apbs02.html (B.2.4. Aliases useful with preseeding)
If the DHCP server also returns a hostname it is used instead of the manually specified one.

Example: If I boot a system with Knoppix, my DHCP server (IPCop 1.4) remembers the system it as "Knoppix". If I then PXE boot the Minimal ISO (loopback mounted), set the hostname to "newsystem1" and perform the installation, the target system ends up with a /etc/hostname set to knoppix.

It looks like the DHCP hostname usage was a feature:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=239121

but it needs to be ignored when a kernel boot command line specifies "hostname".