sudo vi /etc/rc.local
## add default route
route del default
route add default gw x.x.x.x # 默认路由
## add dns-servers
dns1=$(cat /etc/resolv.conf | grep 8.8.8.8)
if [[ ${dns1} = "" && ${dns2} = "" ]];then
echo "nameserver 8.8.8.8" >> /etc/resolv.conf
fi
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