[LinuxUsers] open source LNS (L2TPv2 BCP endpoint)

[Roger E. Rustad, Jr]

Guys, I'm here in Sao Paolo, Brazil and am frantically looking for some 
sort of open source L2TP solution that I can temporarily deploy in order 
to terminate lots of wireless APs.

Specifically, I need an LNS (appliances are tough to come by, so I 
likely need to roll it myself) that will support L2TP as defined by RFC 
2661 in order to provide mobility encapsulation. (Note: L2TPv3 will*not* 
work, just L2TPv2)

More specifically, I need L2TP to provide IP transport for PPP session 
(aka "Bridging Control Protocol" [BCP] over RFC 3518).

I've googled and googled, but haven't found anything that can guarantee 
this type of tunneling.  If anyone knows of anything, please let me know!