/usr/lib/update-cluster/rarpd.updatelist is in rarpd 0.981107-7.1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 | #!/bin/bash
update-cluster-parseconfig mac ip < /etc/update-cluster/cluster.xml |grep -v ! > /etc/ethers
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