Man pages matching name net::jabber::loudmouth::proxy in section 3pm:

Net::Jabber::Loudmouth::Proxy.3pm.en	debian 10 / libnet-jabber-loudmouth-perl
Net::Jabber::Loudmouth::Proxy.3pm.en	debian 11 / libnet-jabber-loudmouth-perl
Net::Jabber::Loudmouth::Proxy.3pm.en	debian 12 / libnet-jabber-loudmouth-perl