/usr/bin/check-ifupdown-scripts-zg2.d-symlinks
/usr/bin/dump-ifupdown-scripts-zg2.d-symlinks
/usr/bin/kill-ifupdown-scripts-zg2.d-symlinks
/usr/bin/update-ifupdown-scripts-zg2.d-symlinks
You may install this package on Debian with
apt-get
install ifupdown-scripts-zg2