10.100.0.1 dev ppp0 proto kernel scope link src 10.100.84.167
91.203.64.0/30 via 172.20.0.1 dev eth0 proto static
169.254.0.0/16 dev eth0 scope link metric 1000
192.168.0.0/16 via 172.20.0.1 dev eth0 proto static
172.20.0.0/16 dev eth0 proto kernel scope link src 172.20.8.111 metric 1
172.16.0.0/12 via 172.20.0.1 dev eth0 proto static
10.0.0.0/8 via 172.20.0.1 dev eth0 proto static
default dev ppp0 scope link

[global]
access control = yes
port=1701
[lac garanta]
lns = vpn.garanta.ru
redial = yes
redial timeout = 1
require chap = yes
require authentication = no
name = [тут логин]
ppp debug = yes
pppoptfile = /etc/ppp/options.xl2tpd
require pap = no
autodial = yes

unit 0
name [тут логин]
remotename l2tp
ipparam garanta
connect /bin/true
mru 1460
mtu 1460
lcp-echo-interval 3
lcp-echo-failure 8
logfile /var/log/pppd
nodeflate
nobsdcomp
persist
maxfail 0
nopcomp
noaccomp
defaultroute
replacedefaultroute

логин * пароль