Binary package “l2tpns” in ubuntu karmic
layer 2 tunnelling protocol network server (LNS)
l2tpns is a daemon designed to terminate large volumes of layer 2
tunnelling protocol (RFC 2661: L2TP) sessions.
The daemon supports up to 65535 sessions plus features such as rate
limiting, walled garden, usage accounting, and clustering (for both
load-sharing and redundancy).
Note that only the LNS side of the L2TP protocol is implemented, for
a more complete L2TP implementation see the l2tpd package.