/usr/share/lintian/overrides/nbd-server is in nbd-server 1:2.9.25-2ubuntu1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # The format is different, but still policy-compliant
nbd-server: copyright-without-copyright-notice
|