13 自动加载br_netfilter模块，开启ip转发

在/etc/sysctl.conf中添加：

net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 
net.ipv4.ip_forward = 1

执行sysctl -p 时出现：

[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

解决方法：

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

重启后模块失效，下面是开机自动加载模块的脚本

在/etc/新建rc.sysinit 文件

cat /etc/rc.sysinit

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

在/etc/sysconfig/modules/目录下新建文件如下

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

增加权限

chmod 755 br_netfilter.modules

重启后 模块自动加载

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