openl2tp.org

Hello , Dear developers, I was looking at the openl2tp docs, I would like to know if is it possible to build a L2 tunnel over the internet to form a point (server) to multi point clients architecture.
The clients should build the tunnel to the server to provide ethernet Lan connectivity to the hosts conneced behind in a transparent way (acting as a bridge domain)

All the examples I've seen shows how to set ppp interfaces.
Is it mandatory to set an ppp interface for the tunnel? I just want to pass ip traffic within the tunnel.

So, Is there any quick implementation example between lets say two
clientes and a server?
My final goal is to deploy a LNS server in my centos with 200 tunnels with 50 host behind each tunnel. Those host behind the tunneles should not be able to connect between them.
Is that possible ?
Thanks ;
Leandro.

btw; I achieve this using GRE writting a few lines:

#CENTOS
ip tunnel add netb mode gre remote 192.168.0.254 local 192.168.0.253 ttl 255
ip link set netb up
ip addr add 10.0.1.1 dev netb
ip route add 10.0.2.0/24 dev netb

#ARCH
ip tunnel add neta mode gre remote 192.168.0.253 local 192.168.0.254 ttl 255
ip link set neta up
ip addr add 10.0.2.1 dev neta
ip route add 10.0.1.0/24 dev neta

It is not good for me since I need to define static routes.
Any advice would be wellcome;
Thanks;
Leandro.