/usr/share/perl5/ is in libnet-duo-perl 1.00-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Net/
/usr/share/perl5/Net/Duo/
/usr/share/perl5/Net/Duo/Mock/
/usr/share/perl5/Net/Duo/Mock/Agent.pm
/usr/share/perl5/Net/Duo/Admin.pm
/usr/share/perl5/Net/Duo/Auth/
/usr/share/perl5/Net/Duo/Auth/Async.pm
/usr/share/perl5/Net/Duo/Auth.pm
/usr/share/perl5/Net/Duo/Object.pm
/usr/share/perl5/Net/Duo/Admin/
/usr/share/perl5/Net/Duo/Admin/Phone.pm
/usr/share/perl5/Net/Duo/Admin/Integration.pm
/usr/share/perl5/Net/Duo/Admin/Token.pm
/usr/share/perl5/Net/Duo/Admin/Group.pm
/usr/share/perl5/Net/Duo/Admin/User.pm
/usr/share/perl5/Net/Duo/Exception.pm
/usr/share/perl5/Net/Duo.pm