/usr/lib/x86_64-linux-gnu/libgnunetarm.so.1 is in gnunet 0.10.1-2.1build2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgnunetarm.so.1.0.3
/usr/lib/x86_64-linux-gnu/libgnunetarm.so.1.0.3