报错解决 error: "net.bridge.bridge-nf-call-ip6tables" is an unknown key

安装Oracle，设置参数，执行sysctl -p时，报错（忽略该错误，一样可以安装成功）
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
:
3个参数依赖于bridge模块，该模块如果没有加载则会现上面的输出错误      ------参数不明白……
加载模块即可解决
modprobe bridge
lsmod|grep bridge