jpcap : Java library for capturing and sending network packets ( http://netresearch.ics.uci.edu/kfujii/jpcap/doc/index.html )
maven-bin : Project Management and Comprehension Tool for Java ( http://maven.apache.org/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a maggu2810-overlay
For Paludis use this rsync : rsync://gentoo.zugaina.org/maggu2810-overlay-portage
If you have a problem : ycarus(-at-)zugaina.org