Bug#610553: installation-reports: does not cleanly deconfigure network configured with DHCP

[Jeffrey Sheinberg <jeff@bsrd.net>]

Package: installation-reports
Severity: normal

Hi,

Install of squeeze-rc1 (expert mode, non-graphical) from *.iso - works
great except the network is not cleanly deconfigured for DHCP.

Solution - please send SIGUSR2 to the "udhcpc" process at end of
installation (menu items: finish up the installation, or abort the
installation).

Discussion - after the installation completes successfully, the computer
reboots into the new installation, however, the network configuration
via DHCP fails in the new installation.  

This is because my ISP's DHCP server already has handed out a lease to
my computer and this lease is still active.  

This active lease was obtained during the installation process, however,
the installation process did not release the DCHP lease before it
terminated the installation.

Why hasn't this problem been reported before?  Answer - most routers
will just re-offer an active DHCP lease to the same MAC address that had
originally obtained the lease.  However, my ISP's DHCP servers will only
re-offer an active leave when the requested ip-address matches the
ip-address that was provided with the original lease.

Note that on my other production Debian "lenny" and "squeeze" systems,
the DHCP lease is always released when the network is deconfigured.

Thanks,

Jeffrey Sheinberg


-- System Information:
Debian Release: 6.0
  APT prefers proposed-updates
  APT policy: (500, 'proposed-updates'), (500, 'testing'), (500, 'stable')
Architecture: i386 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash