hostname of the booted system according to the DNS information.
This patch takes care of the netboot case.
---- a/scripts/live
-+++ b/scripts/live
+Index: b/scripts/live
+===================================================================
+--- a/scripts/live 2011-07-24 22:07:59.000000000 +0200
++++ b/scripts/live 2011-07-24 22:08:02.000000000 +0200
@@ -220,6 +220,11 @@
export NOACCESSIBILITY
;;