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

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

[ebuild  N     ] sys-apps/ed-1.22.5::gentoo  USE="-verify-sig" 70 KiB
[ebuild  N     ] net-dns/ndu-0.4-r4::gentoo  16 KiB

Total: 2 packages (2 new), Size of downloads: 86 KiB