/usr/lib/olsrd/libnmea.so is in olsrd-plugins 0.6.6.2-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/olsrd/libnmea.so.1.0.4
/usr/lib/olsrd/libnmea.so.1.0.4