在/etc/sysctl.conf中新增：

net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1 

[root@localhost ~]# sysctl -p
sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-ip6tables: No such file or directory
sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory
 

解決方法：

[root@localhost ~]# modprobe br_netfilter
[root@localhost ~]# sysctl -p
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1

重啟後模組失效，下面是開機自動載入模組的指令碼

在/etc/新建rc.sysinit 檔案

cat /etc/rc.sysinit

#!/bin/bash
for file in /etc/sysconfig/modules/*.modules ; do
[ -x $file ] && $file
done
 

在/etc/sysconfig/modules/目錄下新建檔案如下

cat /etc/sysconfig/modules/br_netfilter.modules
modprobe br_netfilter

增加許可權

chmod 755 br_netfilter.modules

重啟後 模組自動載入

[root@localhost ~]# lsmod |grep br_netfilter
br_netfilter           22209  0
bridge                136173  1 br_netfilter