These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.05 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/Digest-BubbleBabble-0.20.0-r3::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 45 KiB
[ebuild  N     ] dev-perl/Net-LibIDN2-1.20.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 24 KiB
[ebuild  N     ] dev-perl/Net-DNS-1.560.0::gentoo  USE="-examples -minimal -test -verify-sig" PERL_FEATURES="ithreads (-debug) -quadmath" 260 KiB
[ebuild  N     ] dev-perl/Net-DNS-SEC-1.260.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 42 KiB
[ebuild  N     ] net-dns/fpdns-20190131::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 912 KiB

Total: 5 packages (5 new), Size of downloads: 1282 KiB