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

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] net-libs/miniupnpc-2.3.3-r1:0/21::gentoo  USE="-verify-sig" 138 KiB
[ebuild  N     ] net-misc/autoupnp-0.5.1::gentoo  USE="-libnotify" 14 KiB

Total: 2 packages (2 new), Size of downloads: 152 KiB