These ebuilds come from http://overlays.gentoo.org/dev/aross.
If you have some problems, go to the official site first.
l2tpns : Layer 2 tunneling protocol network server (LNS) ( http://sourceforge.net/projects/l2tpns )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a zugaina
For Paludis use this rsync : rsync://gentoo.zugaina.org/zugaina-portage
If you have a problem : ycarus(-at-)zugaina.org