/usr/share/doc/libecap2-dev/README is in libecap2-dev 0.2.0-1ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libecap2-dev/../libecap2/README
/usr/share/doc/libecap2-dev/../libecap2/README