/usr/lib/dunecontrol/dune-istl/dune.module is in libdune-istl-dev 2.2.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | Module: dune-istl
Version: 2.2.1
Maintainer: dune-devel@dune-project.org
Depends: dune-common (>= 2.2)
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