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/ftpproxy-0-r2::gentoo  0 KiB
[ebuild  N     ] acct-user/ftpproxy-0-r2::gentoo  0 KiB
[ebuild  N     ] net-ftp/frox-0.7.18-r9::gentoo  USE="ssl -clamav -transparent" 170 KiB

Total: 3 packages (3 new), Size of downloads: 170 KiB