Man pages matching name net::openssh::parallel::constants in section 3pm:

Net::OpenSSH::Parallel::Constants.3pm.en	debian 10 / libnet-openssh-parallel-perl
Net::OpenSSH::Parallel::Constants.3pm.en	debian 11 / libnet-openssh-parallel-perl
Net::OpenSSH::Parallel::Constants.3pm.en	debian 12 / libnet-openssh-parallel-perl