/usr/lib/libeiskaltdcpp.so is in libeiskaltdcpp-dev 2.2.10+186+g1c0173ec-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libeiskaltdcpp.so.2.4
/usr/lib/libeiskaltdcpp.so.2.4