sudo su
echo "net.core.default_qdisc=fq_codel" >> /etc/sysctl.d/bbr.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.d/bbr.conf
modprobe tcp_bbr
sysctl -p /etc/sysctl.d/bbr.conf
sysctl net.ipv4.tcp_available_congestion_control
sysctl net.ipv4.tcp_congestion_control
reboot
lsmod | grep bbr
Uh...this is...very old. I ought to update or nix it honestly, I think some of this is enabled by default these days.
Edit: Decided to update.