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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild   R    ] net-libs/libpcap-1.10.6::gentoo  USE="dbus -bluetooth -netlink -rdma -remote -static-libs -test -usb -verify-sig -yydebug" 965 KiB

Total: 1 package (1 reinstall), Size of downloads: 965 KiB