/usr/share/man/man1/gtnameserv.1.gz is in gcj-jdk 4:6.3.0-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/gtnameserv-6.1.gz
/usr/share/man/man1/gtnameserv-6.1.gz