Change TCP congestion control to BBR (Bottleneck Bandwidth and RTT)

# Current
sysctl net.ipv4.tcp_congestion_control

# Available
sysctl net.ipv4.tcp_available_congestion_control

# Change TCP congestion control to BBR (Bottleneck Bandwidth and RTT)
sudo vi /etc/sysctl.conf

Append the following two lines:

net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr

reboot