[Editor's note] the IPv4 address is exhausted and IPv6 is to be promoted, but it has been delayed. In this case, do not let it disturb our system before it is ready.
IPv6IPv6 is the next version of IPv4 in the addressing scheme. It is used to assign a digital address to the domain name.
IPv6 supports more addresses than IPv4. However, it has not been widely supported and is still being accepted.
Ubuntu enables IPV6 http://www.linuxidc.com/Linux/2013-03/80479.htm
IPV6 address http://www.linuxidc.com/Linux/2013-01/78078.htm for Cisco CCIE Certification knowledge points
WireShark capture IPV6 packet use tutorial http://www.linuxidc.com/Linux/2013-01/77518.htm
Use IPV6 source without traffic update http://www.linuxidc.com/Linux/2012-07/66240.htm on Ubuntu 12.04 Campus Network
Build IPV6 ftp server http://www.linuxidc.com/Linux/2012-07/65150.htm in Linux
CentOS IPV6 settings http://www.linuxidc.com/Linux/2012-06/63644.htm
Configure update source http://www.linuxidc.com/Linux/2012-06/63643.htm in CentOS pure IPV6 environment
CentOS 6 IPV6 disabling method http://www.linuxidc.com/Linux/2012-06/63642.htm
Does your system support IPv6?To support IPv6. First, you need to support IPv6. Ubuntu, Linux Mint, and most modern releases support it. If you look at the ifconfig command output, you will see that your network interface is assigned an IPv6 address.
Let's take a look at "inet6 addr ".
Next, you need a router/MODEM that supports IPv6. In addition, your ISP must support IPv6.
In addition to checking each part of the network device, it is best to check whether you can access the website through IPv6.
There are a lot of websites that can detect whether your network connection supports IPv6. here is an example: http://testmyipv6.com/
The following are the parameters for enabling IPv6 in the kernel:
You can also check in the proc file
Note that the variable here controls the "Disable" of IPv6 ". Therefore, IPv6 is disabled when 1 is set.
Disable IPv6 if it does not supportIf your network device does not support IPv6, it is best to disable them all. Why? This may cause domain name query latency and delay caused by unnecessary attempts to connect to IPv6 addresses during network connections.
I have also encountered problems like this. The apt-get command occasionally tries to connect to the IPv6 address and fails to retrieve the IPv4 address. Let's look at the output under "outputs.
Errors like this are more frequent in the recent Ubuntu, and it may be more frequent than before to try to use IPv6 addresses.
I also noticed similar problems in other applications, such as Hexchat. Similarly, Google Chrome sometimes takes a longer time to query domain names.
So the best solution is to completely disable IPv6 to get rid of these issues. This only requires a little configuration, but it can help you solve many problems on your system. The user even responds to this to accelerate the network.
Disable IPv6-solution 1Edit the file-/etc/sysctl. conf
Add the following lines at the end of the file.
Save and close
Restart sysctl
Check the output of ifconfig again. There should be no IPv6 address.
If not, restart the system and check ifconfig again.
Disable the IPv6-GRUB SolutionYou can also disable IPv6 by editing the grub configuration file.
Search for "GRUB"CMDLINELINUX, and edit it as follows:
You can also add "GRUB"CMDLINELINUX_DEFAULT "variable, which is also useful. Save and close the file and regenerate the grub configuration.
Restart. IPv6 should be disabled now.
This article permanently updates the link address: Http://www.linuxidc.com/Linux/2014-07/104192.htm
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
