apt install python-pip git
pip install git+https://github.com/shadowsocks/shadowsocks.git@master
ssserver -p 993 -k passwd -m aes-128-gcm -d start

Google

apt install --install-recommends linux-generic-hwe-16.04
reboot

vim /etc/sysctl.conf
[
net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0
net.ipv4.tcp_congestion_control = bbr
net.core.default_qdisc = fq
]
sysctl -p

IPv6 Tunnel Broker

NOTE: When behind a firewall appliance that passes protocol 41, use the IPv4 address you get from your appliance's DHCP service instead of the IPv4 endpoint you provided to our broker.