Man pages matching name net::frame::dump::online2 in section 3pm:

Net::Frame::Dump::Online2.3pm.en	debian 10 / libnet-frame-dump-perl
Net::Frame::Dump::Online2.3pm.en	debian 11 / libnet-frame-dump-perl
Net::Frame::Dump::Online2.3pm.en	debian 12 / libnet-frame-dump-perl