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website access issue using IPv6

Created: Dec 13, 2021 18:32:51Latest reply: Dec 13, 2021 19:41:20 527 4 1 0 0
  Rewarded HiCoins: 0 (problem resolved)

Why can't I access websites using IPv6 addresses after IPv4/IPv6 dual stack is configured?


  • x
  • convention:

Featured Answers
Vlada85
MVE Author Created Dec 13, 2021 19:35:06

With the dual-stack solution, every networking device, server, switch, router, and firewall in an ISP's network will be configured with both IPv4 and IPv6 connectivity capabilities. Most importantly, dual-stack technology allows ISPs to process IPv4 and IPv6 data traffic simultaneously.

Actually, IPv4 and IPv6 aren't compatible with each other, which means devices cannot communicate directly. Today, IPv4 is still dominant in IP network, while IPv6 network has only a small range of deployment and commercial use.
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user_4397771
user_4397771 Created Dec 14, 2021 09:50:35 (0) (0)
good  
wissal
MVE Created Dec 13, 2021 19:41:20

Hello,

Symptom

You have enabled IPv4/IPv6 dual stack for the ECS, but the ECS cannot access websites using IPv6 addresses.

Troubleshooting

  • Check whether the IPv4/IPv6 dual stack is correctly configured and whether the dual-stack NIC of the ECS has obtained an IPv6 address.

  • Check whether the obtained IPv6 address of the dual-stack NIC has been added to a shared bandwidth.

Figure 1 NIC details
en-us_image_0000001135027497.png

Solution

  • When you buy an ECS, select Automatically-assigned IPv6 address for Network.

    If an IPv6 address fails to be automatically assigned or the selected image does not support the function of automatic IPv6 address allocation, manually obtain the IPv6 address by referring to Dynamically Assigning IPv6 Addresses.

    support-doc-new-note.svgNOTE:

    If an ECS is created from a public image:

    • By default, dynamic IPv6 address assignment is enabled for Windows public images.

    • Before enabling dynamic IPv6 address assignment for a Linux public image, check whether IPv6 is supported and then check whether dynamic IPv6 address assignment has been enabled. Currently, all Linux public images support IPv6, and dynamic IPv6 address assignment is enabled for Ubuntu 16 by default. You do not need to configure dynamic IPv6 address assignment for the Ubuntu 16 OS. For other Linux public images, you need to enable this function.

  • By default, IPv6 addresses can only be used for private network communication. If you want to use an IPv6 address to access the Internet or want it to be accessed by IPv6 clients on the Internet, you need to add the IPv6 address to a shared bandwidth. For details, see Buy a Shared Bandwidth and Add the IPv6 Address to It.

    If you already have a shared bandwidth, add the IPv6 address to it.


Detail

https://support.huaweicloud.com/intl/en-us/vpc_faq/faq_connection_0008.html


Thanks

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  • convention:

user_4397771
user_4397771 Created Dec 14, 2021 09:50:25 (0) (0)
good  
All Answers
Vlada85
Vlada85 MVE Author Created Dec 13, 2021 19:35:06

With the dual-stack solution, every networking device, server, switch, router, and firewall in an ISP's network will be configured with both IPv4 and IPv6 connectivity capabilities. Most importantly, dual-stack technology allows ISPs to process IPv4 and IPv6 data traffic simultaneously.

Actually, IPv4 and IPv6 aren't compatible with each other, which means devices cannot communicate directly. Today, IPv4 is still dominant in IP network, while IPv6 network has only a small range of deployment and commercial use.
View more
  • x
  • convention:

user_4397771
user_4397771 Created Dec 14, 2021 09:50:35 (0) (0)
good  
wissal
wissal MVE Created Dec 13, 2021 19:41:20

Hello,

Symptom

You have enabled IPv4/IPv6 dual stack for the ECS, but the ECS cannot access websites using IPv6 addresses.

Troubleshooting

  • Check whether the IPv4/IPv6 dual stack is correctly configured and whether the dual-stack NIC of the ECS has obtained an IPv6 address.

  • Check whether the obtained IPv6 address of the dual-stack NIC has been added to a shared bandwidth.

Figure 1 NIC details
en-us_image_0000001135027497.png

Solution

  • When you buy an ECS, select Automatically-assigned IPv6 address for Network.

    If an IPv6 address fails to be automatically assigned or the selected image does not support the function of automatic IPv6 address allocation, manually obtain the IPv6 address by referring to Dynamically Assigning IPv6 Addresses.

    support-doc-new-note.svgNOTE:

    If an ECS is created from a public image:

    • By default, dynamic IPv6 address assignment is enabled for Windows public images.

    • Before enabling dynamic IPv6 address assignment for a Linux public image, check whether IPv6 is supported and then check whether dynamic IPv6 address assignment has been enabled. Currently, all Linux public images support IPv6, and dynamic IPv6 address assignment is enabled for Ubuntu 16 by default. You do not need to configure dynamic IPv6 address assignment for the Ubuntu 16 OS. For other Linux public images, you need to enable this function.

  • By default, IPv6 addresses can only be used for private network communication. If you want to use an IPv6 address to access the Internet or want it to be accessed by IPv6 clients on the Internet, you need to add the IPv6 address to a shared bandwidth. For details, see Buy a Shared Bandwidth and Add the IPv6 Address to It.

    If you already have a shared bandwidth, add the IPv6 address to it.


Detail

https://support.huaweicloud.com/intl/en-us/vpc_faq/faq_connection_0008.html


Thanks

View more
  • x
  • convention:

user_4397771
user_4397771 Created Dec 14, 2021 09:50:25 (0) (0)
good  

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