To avoid a new breaking when upgrading my jail, I made a "local" NMU to remove the duplicate manpage from a package. I am not familiar with pam packaging, so I choosen libpam-modules-bin.manpages. When installing my "local NMU", I got:
dpkg: error processing archive /PKGS/libpam-modules-bin/libpam-modules-bin_1.5.2-3.1_amd64.deb (--unpack): trying to overwrite '/usr/share/man/man8/pam_namespace_helper.8.gz', which is also in package libpam-module s:amd64 1.5.2-2 Errors were encountered while processing: /PKGS/libpam-modules-bin/libpam-modules-bin_1.5.2-3.1_amd64.deb After fixing this new issue, the package was installed fine. Regards, Eriberto