https://insidelinuxdev.net/article/a018fw.html has a good example under section 3 (ignore the IPSEC). We will update this document with more details after doing testing.
/etc/xl2tpd/xl2tpd.conf for xl2tpd
[global]
[lac vpn-connection]
lns = 216.146.19.255
ppp debug = yes
pppoptfile = /etc/ppp/options.l2tpd.client
length bit = yes/etc/ppp/options.l2tpd.client for ppp:
ipcp-accept-local
ipcp-accept-remote
refuse-eap
require-mschap-v2
noccp
noauth
idle 1800
mtu 1400
mru 1400
defaultroute
usepeerdns
debug
connect-delay 5000
name <yourusername>
password <yourpassword>
