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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] acct-group/openntpd-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-user/root-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-user/openntpd-0-r3::gentoo  0 KiB
[ebuild  N     ] net-misc/openntpd-7.9_p1-r1::gentoo  USE="-constraints (-selinux)" 459 KiB

Total: 4 packages (4 new), Size of downloads: 459 KiB