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试用系统最好是ubuntu 16

iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -F
Ubuntu镜像默认设置了Iptable规则，关闭它
apt-get purge netfilter-persistent
reboot

本期代码：wget -N –no-check-certificate https://raw.githubusercontent.com/xiaoyaoguangshijie/xiaoyao1/master/DDfuhe/DD.sh && chmod +x DD.sh && bash DD.sh

apt-get install curl
apt-get install wget

bbr代码：wget –no-check-certificate -O bbr.sh https://raw.githubusercontent.com/xiaoyaoguangshijie/xiaoyao1/master/zwz1018-master/bbr.sh && chmod +x bbr.sh && ./bbr.sh