Man pages matching name systemd-portabled.service in section 8:

systemd-portabled.service.8.de	debian 11 / manpages-de
systemd-portabled.service.8.en	debian 11 / systemd-container
systemd-portabled.service.8.de	debian 12 / manpages-de
systemd-portabled.service.8.en	debian 12 / systemd-container