Man pages matching name perlbal::manual::loadbalancer in section 3pm:

Perlbal::Manual::LoadBalancer.3pm.en	debian 10 / libperlbal-perl
Perlbal::Manual::LoadBalancer.3pm.en	debian 11 / libperlbal-perl
Perlbal::Manual::LoadBalancer.3pm.en	debian 12 / libperlbal-perl