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

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] net-firewall/fwknop-2.6.11-r1::gentoo  USE="client gdbm gpg iptables server -extras -firewalld -nfqueue -static-libs -udp-server -verify-sig" 1770 KiB

Total: 1 package (1 new), Size of downloads: 1770 KiB