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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] acct-group/maradns-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-user/duende-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-user/maradns-0-r3::gentoo  0 KiB
[ebuild  N     ] net-dns/maradns-3.5.0036::gentoo  USE="-examples" 8978 KiB

Total: 4 packages (4 new), Size of downloads: 8978 KiB