How to Disable IPv6 in CentOS 7: Step-by-Step Guide

Why Disable IPv6 in CentOS 7?

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Step 1: Access the Network Configuration File

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Step 2: Add IPv6 Disable Parameters

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Step 3: Save and Apply Changes

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Step 4: Disable IPv6 on Boot

[{"selector":"#anim-fdec81e5-fcfa-49e3-945a-451858260f0f","keyframes":{"opacity":[0,1]},"delay":0,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-31656ef4-b0a7-4936-b053-ce916119364e","keyframes":{"transform":["translate3d(0px, 100.05039%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Add the ipv6.disable=1 parameter to the GRUB configuration file by editing /etc/default/grub. Read Full Article

Step 5: Reboot and Verify IPv6 is Disabled

[{"selector":"#anim-ed84c59f-7eaf-4963-83ac-f686327a5e62","keyframes":{"opacity":[0,1]},"delay":0,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6383ff34-633a-4ed0-a77e-9839881b347d","keyframes":{"transform":["translate3d(0px, 100.05039%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Reboot your system to apply changes. Use ip a or ifconfig to verify that IPv6 is now disabled. Read Full Article

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