Debian Gurus:

I'm trying to upgrade libc6 in my UML session at Real-Time
from  libc6 2.3.2.ds1-20 to libc6_2.3.5-6 but this never
completes successfully.

I understand that upgrading libc6 is "pulling the rug" out
from under sshd and it's understandable that my ssh connection
is getting closed.  I've tried to start this upgrade as a
background process with (alternatively):

  apt-get -q -y install libc6 > /tmp/apt.log 2>&1 &
  apt-get -q -y -f install > /tmp/install.log 2>&1 &
  dpkg -i libc6_2.3.5-6_i386.deb > /tmp/dpkg.log 2>&1 &

Each without success.  And all I see in the logs is
  Preparing to replace libc6 2.3.2.ds1-20 (using libc6_2.3.5-6_i386.deb) ...

I've looked at the following bugs, but have not found a resolution:
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=325504
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=205039

Is there a way to perform this upgrade when getting to a real
console or even a serial port is not a possibility?

Thanks!

--Tom