+if [ "$1" = "configure" ] && [ -e /usr/share/debconf/confmodule ]; then
+ . /usr/share/debconf/confmodule
+
+ # clear old cached values
+ if dpkg --compare-versions "$2" lt 6.0; then
+ db_set carnet-upgrade/debconf-priority ""
+ db_set carnet-upgrade/check-services ""
+
+ # display installation notice for new version
+ db_fset carnet-upgrade/short-instructions seen false
+ db_input high carnet-upgrade/short-instructions || true
+ db_go
+ fi
+fi
+