Man pages matching name net::dns::resolver::mock in section 3pm:

Net::DNS::Resolver::Mock.3pm.en	debian 10 / libnet-dns-resolver-mock-perl
Net::DNS::Resolver::Mock.3pm.en	debian 11 / libnet-dns-resolver-mock-perl
Net::DNS::Resolver::Mock.3pm.en	debian 12 / libnet-dns-resolver-mock-perl