This is one of 4 packages which are still in my local overlay and which seem to be forgotten by the recent "perl-5.20" conversion: corelist sugggests that perl-5.20 contains perl-libnet-1.230.0, but none of the ~virtual/perl-libnet-1.230.0 ebuilds is satisfied if perl-5.20 is installed.
libnet is still work in progress see https://wiki.gentoo.org/wiki/Project:Perl/Ongoing_tasks#Virtuals_that_still_need_some_attention
(In reply to Martin Väth from comment #0) > This is one of 4 packages which are still in my local overlay and which seem > to be forgotten by the recent "perl-5.20" conversion: > > corelist sugggests that perl-5.20 contains perl-libnet-1.230.0, but none of > the ~virtual/perl-libnet-1.230.0 ebuilds is satisfied if perl-5.20 is > installed. Is not on CPAN anymore in that version, and right now I cannot verify which version of libnet corresponds exactly to 5.20. Left a note to stabilize 1.270.0 together with 5.20.