修改 linux 内核文件 sysctl  -P 报错

error: "net.bridge.bridge-nf-call-ip6tables" is an unknown key
error: "net.bridge.bridge-nf-call-iptables" is an unknown key
error: "net.bridge.bridge-nf-call-arptables" is an unknown key

解决方法如下：

modprobe bridge

lsmod|grep bridge