Enabling BBR in Linux Kernel 4.9

Enable BBR in Linux

For Linux Kernal 4.9 above, Enable BBR is easy.

Example of OS that have 4.9 above by default : Ubuntu 18, Ubuntu 20
echo net.core.default_qdisc=fq >> /etc/sysctl.conf
echo net.ipv4.tcp_congestion_control=bbr >> /etc/sysctl.conf
sysctl -p

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