/usr/share/man/man3/remctl_open_sockaddr.3.gz is in libremctl-dev 3.9-1+b2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/remctl_open.3.gz
/usr/share/man/man3/remctl_open.3.gz