鱼漂 (一直漂)

绝大多数版本的linux支持ipv6，可惜IPV6离我们还是很远，增加它，不但会影响我们的系统性能，如果你使用linux做桌面的话，它还会严重影响你的上网速度。
我个人感觉就是DNS解析起来非常得慢。
以下是如何禁用它的支持。
原文请看这里：
http://www.mjmwired.net/resources/mjm-fedora-fc6.html#ipv6
Disable IPv6 Features
18 October 2006

FC6 has the most IPv6 support than in previous releases. Most likely you do not use IPv6. If you wish to eliminate the slight extra resources consumed by enabling IPv6, then you may do the following steps.

This may speed up your DNS lookup times when using the internet.

Disable IPv6 Networking Support
支持网络支持

Edit /etc/sysconfig/network. (A reboot will be required)

[mirandam@charon ~]$ sudo gedit /etc/sysconfig/network

Change:
NETWORKING_IPV6=yes

To:
NETWORKING_IPV6=no

Disable IPv6 Protocol Stack for Kernel
禁止IPV6的内核模块。

Edit /etc/modprobe.conf.

[mirandam@charon ~]$ sudo gedit /etc/modprobe.conf

Add the following 2 lines: (A reboot will be required)

alias net-pf-10 off
alias ipv6 off

Disable IPv6 Firewall
禁止IPV6的防火墙。

Stop ipv6 firewall:

[mirandam@charon ~]$ sudo /etc/init.d/ip6tables stop
Flushing firewall rules:                                   [  OK  ]
Setting chains to policy ACCEPT: filter                    [  OK  ]
Unloading ip6tables modules:                               [  OK  ]

Turn ipv6 firewall off during future usage:

[mirandam@charon ~]$ sudo /sbin/chkconfig --level 35 ip6tables off