Man pages matching name net::frame::layer::icmpv6::destunreach in section 3pm:

Net::Frame::Layer::ICMPv6::DestUnreach.3pm.en	debian 10 / libnet-frame-layer-icmpv6-perl
Net::Frame::Layer::ICMPv6::DestUnreach.3pm.en	debian 11 / libnet-frame-layer-icmpv6-perl
Net::Frame::Layer::ICMPv6::DestUnreach.3pm.en	debian 12 / libnet-frame-layer-icmpv6-perl