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This article introduces you to Linux system disable ipv6 the easiest way is what, the content is very detailed, interested friends can refer to, hope to help you.

IPv6 (IP version 6) is a new version of the Internet Protocol (IP) designed to replace IPv4. And the following improvements were made to address issues that were not considered when IPv4 was originally designed:

Extended address space IPv6 extends IP address length from 32 bits to 128 bits, with the main goal of supporting more hierarchical routing architectures, larger address space (IPv6 addresses are no longer exhausted), and simpler autoconfiguration. Add scope field to multicast address to improve scalability of multicast routing. Define a new address type called "anycast address" to send packets to the nearest node in a group.

Simplified **IP header format ** IPv6 removes unnecessary fields from IPv4 headers and moves option fields to extended headers to reduce the processing time of IP packets forwarded by routers.

Support for better extensibility Changing certain options of IP headers makes routers more efficient in forwarding packets and provides greater flexibility to introduce new options or new extended headers in the future.

Provide better **QoS** Add a new label field called "Flow Label" to the IP header, allowing packet senders to request special traffic handling, such as real-time services.

Authentication and privacy features support authentication, data integrity, and privacy.

Note that IPv6 will completely replace IPv4, because the replacement process of the IP layer version is quite lengthy and arduous, its designers hope that IPv6 is the ultimate version of the IP layer, and there is no need to face the problem of updating the IP layer version in the future. As for whether IPv6 can stand the test and become the ultimate version of the IP layer, only time will tell.

Linux system disable ipv6 method: method 1: edit the file/etc/sysctl.conf

vi /etc/sysctl.conf

Add the following line:

net.ipv6.conf.all.disable_ipv6 = 1

net.ipv6.conf.default.disable_ipv6 = 1

If you want to disable IPv6 for a specific network card, for example, enp 0s3, add the following line.

net.ipv6.conf.enp0s3.disable_ipv6 = 1

Save and exit the file.

Execute the following command to make the settings take effect.

sysctl -p

Method 2: To disable IPv6 in a running system, enter the following commands:

echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6

echo 1 > /proc/sys/net/ipv6/conf/default/disable_ipv6

Or,

sysctl -w net.ipv6.conf.all.disable_ipv6=1

sysctl -w net.ipv6.conf.default.disable_ipv6=1

IPv6 has been banned.

The easiest way to disable ipv6 on Linux is to share it here. I hope the above content can help you and learn more. If you think the article is good, you can share it so that more people can see it.

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