/usr/share/lintian/overrides/oping is in oping 1.6.1+2.g207d51d-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | oping: setuid-binary usr/bin/oping 4755 root/root
oping: setuid-binary usr/bin/noping 4755 root/root
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