/usr/lib/x86_64-linux-gnu/libdapclient.so.6 is in libdapclient6v5 3.19.1-2build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libdapclient.so.6.1.7
/usr/lib/x86_64-linux-gnu/libdapclient.so.6.1.7