安装依赖
安装 brctl 或 iproute
ubuntu
apt intstall -y brctl iproute2
alpine
apk add brctl iproute2
配置网桥
以创建虚拟网桥 br-bridge 并桥接 eth1 eth2 两张网卡为例
ip route
ip link add name br-bridge type bridge
ip link set dev br-bridge up
ip link set dev eth1 master br-bridge
ip link set dev eth2 master br-bridge
brctl
brctl addbr br-bridge
brctl addif br-bridge eth1 eth2
启动网卡
避免因为网桥或网卡未启动的，导致流量无法正常通过
ip link set eth1 up
ip link set eth2 up
ip link set br-bridge up