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

Calculating dependencies ... done!
Dependency resolution took 1.08 s (backtrack: 0/20).

[ebuild  N     ] net-dialup/ppp-scripts-0::gentoo  2 KiB
[ebuild  N     ] net-libs/wvstreams-4.6.1_p14-r3::gentoo  USE="dbus pam -boost -debug -doc" 1113 KiB
[ebuild  N     ] net-dialup/ppp-2.5.4-r1:0/2.5.4::gentoo  USE="pam -activefilter -atm (-selinux) (-systemd)" 990 KiB
[ebuild  N     ] net-dialup/wvdial-1.61-r1::gentoo  93 KiB

Total: 4 packages (4 new), Size of downloads: 2197 KiB