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

Calculating dependencies ... done!
Dependency resolution took 1.04 s (backtrack: 0/20).

[ebuild  N     ] net-libs/libnet-1.3-r1:1.1::gentoo  USE="-man -static-libs -test" 603 KiB
[ebuild  N     ] sys-libs/db-6.0.35-r5:6.0::gentoo  USE="-cxx -doc -examples -tcl -test" 35677 KiB
[ebuild  N     ] net-libs/libnids-1.26-r2:1.2::gentoo  USE="glib libnet -static-libs" 143 KiB
[ebuild  N     ] net-analyzer/dsniff-2.4_beta1_p34::gentoo  USE="X" 158 KiB

Total: 4 packages (4 new), Size of downloads: 36579 KiB