Linux diable ipv6

在RHEL 5下面测试成功

linux下面禁止ipv6的方法：

来自： 杨志刚 博客 (http://yangzhigang.cublog.cn)

这里我所做的是Redhat Linux,在系统中ifconfig或是netstat -an都会显示出IPV6的结果，如：

[[email protected] conf]# ifconfig
eth1      Link encap:Ethernet  HWaddr 00:15:C5:EF:74:1C 
          inet addr:192.168.102.22  Bcast:192.168.102.255  Mask:255.255.255.0
          inet6 addr: fe80::215:c5ff:feef:741c/64 Scope:Link

[[email protected] conf]# netstat -ant
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address            
tcp 0 576 ::ffff:192.168.102.22:22    ::ffff:192.168.12.100:3339  ESTABLISHED
tcp 0 0   ::ffff:192.168.102.22:80    ::ffff:192.168.102.25:36479 TIME_WAIT  
tcp 0 0   ::ffff:192.168.102.22:80    ::ffff:192.168.102.25:36503 TIME_WAIT

在IPV6还没有广泛使用时，这有些不方便，那么在Redhat Linux下禁止IPV6的方法也很容易：
vi /etc/modprobe.conf，加入以下两行参数，

alias net-pf-10 off
alias ipv6 off

之后reboot。（注：用service network restart是不可以的）

重启之后，ifconfig或netstat -ant等只能显示IPV4的地址信息了。

对于其他的系统，可以参照以下文档：

Here‘s the summary of what I can think of, with alternate methods in case the first one doesn‘t work with you:

NOTES:

• In distros using /etc/modprobe.conf, beware that you might get overriden by /etc/modprobe.conf.local or by/etc/modprobe.d/*.
• If you disable IPv6, I suppose you don‘t need tunnels either. You could also add there:
  
  install sit0 /bin/true
• A last "anti-IPv6" issue: don‘t forget the old trick of checking if your Firefox has IPv6 disabled:
  • CTRL+L, about:config (Enter)
  • Filter by ipv6.
  • Set network.dns.disableIPv6 to true.

摘于：http://blog.chinaunix.net/uid-7654720-id-1742032.html