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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] net-libs/libnet-1.3-r1:1.1::gentoo  USE="-man -static-libs -test" 603 KiB
[ebuild  N     ] net-analyzer/tcptraceroute-1.5_beta7-r3::gentoo  117 KiB

Total: 2 packages (2 new), Size of downloads: 719 KiB