Do you think that this is a proper fix?
diff --git a/debian/fai-nfsroot.preinst b/debian/fai-nfsroot.preinst
index a2b5d45e..47402800 100755
--- a/debian/fai-nfsroot.preinst
+++ b/debian/fai-nfsroot.preinst
@@ -5,7 +5,11 @@ if [ ! -f /.THIS_IS_THE_FAI_NFSROOT ]; then
exit 1
fi
-dpkg-divert --package fai-nfsroot --add --divert /etc/init.d/rcS.orig --rename
/etc/init.d/rcS
+case $1 in
+ install)
+ dpkg-divert --package fai-nfsroot --add --divert /etc/init.d/rcS.orig
--rename /etc/init.d/rcS
+ ;;
+esac
