# This is a tunnel instance named "t1"
[tunnel.t1]
# version specifies the version of the L2TP specification the
# tunnel should use.
# Only "l2tpv3" is supported.
version = "l2tpv3"
# encap specifies the encapsulation to be used for the tunnel.
# L2TPv3 tunnels may be UDP or IP.
encap = "udp"
# local specifies the local address that the tunnel should
# bind its socket to
local = "127.0.0.1:5000"
# tid specifies the local tunnel ID of the tunnel.
# Tunnel IDs must be unique for the host.
# L2TPv2 tunnel IDs are 16 bit, and may be in the range 1 - 65535.
# L2TPv3 tunnel IDs are 32 bit, and may be in the range 1 - 4294967295.
tid = 62719
# peer specifies the address of the peer that the tunnel should
# connect its socket to
peer = "127.0.0.1:5001"
# ptid specifies the peer's tunnel ID for the tunnel.
# The peer's tunnel ID must be unique for the peer, and are unrelated
# to the local tunnel ID.
# The rules for tunnel ID range apply to the peer tunnel ID too.
ptid = 72819
# hello_timeout if set enables L2TP keep-alive (HELLO) messages.
# A hello message is sent N milliseconds after the last control
# message was sent or received.  It allows for early detection of
# tunnel failure on quiet connections.
# By default no keep-alive messages are sent.
hello_timeout = 7500 # milliseconds
    

# This is a session instance called "s1" within parent tunnel "t1".
# Session instances are always created inside a parent tunnel.
[tunnel.t1.session.s1]
# pseudowire specifies the type of layer 2 frames carried by the session.
# Static sessions support Ethernet pseudowires only.
pseudowire = "eth"
# sid specifies the local session ID of the session.
# Session IDs must be unique to the tunnel for L2TPv2, or unique to
# the peer for L2TPv3.
# L2TPv2 session IDs are 16 bit, and may be in the range 1 - 65535.
# L2TPv3 session IDs are 32 bit, and may be in the range 1 - 4294967295.
sid = 12389
# psid specifies the peer's session ID for the session.
# The peer's session ID is unrelated to the local session ID.
# The rules for the session ID range apply to the peer session ID too.
psid = 1234
# seqnum, if set, enables the transmission of sequence numbers with
# L2TP data messages.  Use of sequence numbers enables the data plane
# to reorder data packets to ensure they are delivered in sequence.
# By default sequence numbers are not used.
seqnum = false
# cookie, if set, specifies the local L2TPv3 cookie for the session.
# Cookies are a data verification mechanism intended to allow misdirected
# data packets to be detected and rejected.
# Transmitted data packets will include the local cookie in their header.
# Cookies may be either 4 or 8 bytes long, and contain aribrary data.
# By default no local cookie is set.
cookie = [ 0x12, 0xe9, 0x54, 0x0f, 0xe2, 0x68, 0x72, 0xbc ]
# peer_cookie, if set, specifies the L2TPv3 cookie the peer will send in
# the header of its data messages.
# Messages received without the peer's cookie (or with the wrong cookie)
# will be rejected.
# By default no peer cookie is set.
peer_cookie = [ 0x74, 0x2e, 0x28, 0xa8 ]
# interface_name, if set, specifies the network interface name to be
# used for the session instance.
# By default the Linux kernel autogenerates an interface name specific to
# the pseudowire type, e.g. "l2tpeth0", "ppp0".
# Setting the interface name can be useful when you need to be certain
# of the interface name a given session will use.
# By default the kernel autogenerates an interface name.
interface_name = "l2tpeth42"
# l2spec_type specifies the L2TPv3 Layer 2 specific sublayer field to
# be used in data packet headers as per RFC3931 section 3.2.2.
# Currently supported values are "none" and "default".
# By default no Layer 2 specific sublayer is used.
l2spec_type = "default"