Some build scripts have been published for future integration in Portage.
While the scripts have not yet been accepted please refer to the alternative procedure.
# emerge -av netzob
Alternative non official repositories are available on Gentoo which are called "overlays".
The tool used to synchronize with these repositories is called "layman"
# emerge app-portage/layman
# layman -a lootr
# emerge -av dev-python/netzob
# (~) git clone https://dev.netzob.org/git/netzob-gentoo.git
PORTDIR_OVERLAY="/home/USER/netzob-gentoo/"
# emerge --sync
# emerge -av netzob
# ACCEPT_KEYWORDS="~x86" emerge -av netzob