IPv6 Termination

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EIP

  • API Reference
    • API function release records
    • API Service Domain Name
    • API Specifications
    • Appendix 1
    • Bandwidth Package Related Interfaces
      • Adjust the bandwidth of the bandwidth package
      • Create bandwidth package
      • Query bandwidth package details
      • Query bandwidth package list information of users
      • Release bandwidth package
      • Update the automatic release time of the bandwidth package
      • Update the name of the bandwidth package
    • DDoS Basic Protection Related Interfaces
      • Modify DDoS basic protection threshold
      • Query DDoS Basic Protection Attack Records
      • Query DDoS basic protection list
    • EIP Related Interfaces
      • Apply for EIP
      • Bind EIP
      • Disable EIP direct
      • EIP bandwidth scaling
      • EIP renewal has been enabled
      • Enable EIP direct
      • Query EIP list in bucket trash
      • Query EIP list
      • Release EIP
      • Release EIPs in the bucket trash
      • Renew EIP
      • Restore EIPs in the bucket trash
      • Selective release of EIP
      • Unbind EIP
      • Unsubscribe prepaid EIP
      • Update EIP Release Protection Switch
    • Error code
    • General Description
    • Inquiry Related
      • Bandwidth package price inquiry
      • EIP Inquiry
      • EIPGROUP Inquiry
      • Shared Traffic Package Inquiry
    • Interface Overview
    • Overview
    • Prerequisites for use
    • Shared Bandwidth Related Interfaces
      • Bandwidth scaling up for EIPGROUP
      • Create EIPGROUP
      • EIPGROUP IP count upgrade
      • EIPGROUP release
      • EIPGROUP renewal
      • EIPGROUP update
      • Migrate EIP from EIPGROUP
      • Migrate EIP into EIPGROUP
      • Query EIPGROUP details
      • Query the EIPGROUP list
      • Unsubscribe prepaid EIPGROUP
    • Shared Traffic Package Related Interfaces
      • Create a shared traffic package
      • Query shared traffic package details
      • Query shared traffic package list
    • TBSP Related Interfaces
      • Add Protection IP Allow List
      • Add Protocol Blocking
      • Add Region Blocking
      • Bind Protection Object
      • Close Protection IP Cleaning
      • Create TBSP
      • Delete Protection IP Allow List
      • Delete Protection Object
      • Delete Protocol Blocking
      • Delete Region Blocking
      • Modify Protection IP Cleaning Threshold
      • Modify Protection IP Protection Level
      • Open Protection IP Cleaning
      • Query Protection IP Allow List
      • Query Protection IP Cleaning Threshold List
      • Query Protocol Blocking List
      • Query Region Blocking List
      • Query TBSP Details
      • Query TBSP List
      • TBSP Capacity dilatation
      • TBSP renew
  • FAQs
    • Billing class
    • Configuration
    • Consultation
    • Security class
  • Function Release Records
  • Operation guide
    • Address pool
    • Bandwidth package
      • Bandwidth scale-up package
      • Cross-border acceleration package
    • Certification
    • DDoS standard protection
    • EIP Instance
      • Create instance
      • EIP Direct Connect
      • IPv6 Termination
      • Manage Alarms
      • Operation Instance
      • Shift Charge
      • View monitoring
    • EIP Self-Service Diagnostics
      • EIP Instance Diagnosis
    • EIPGROUP
      • Bind cloud resources
      • Manage Shared Bandwidth
      • Purchase Shared Bandwidth
      • View monitoring
    • High Defense EIP
    • Identity and access management
    • Recycle bin
    • Shared traffic package
      • Purchase Shared Traffic Package
      • View Shared Traffic Package
    • Tag Management
    • Traffic Burst Service Package
      • Instance management
      • Monitor alarm
      • Protection Configuration
    • Unblocking Center
  • Product Description
    • Application scenarios
    • Product advantages
    • Product Introduction
    • Usage restrictions
  • Product pricing
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  • Service Level Agreement (SLA)
    • EIP Service Level Agreement SLA
    • TBSP Service Level Agreement SLA
  • Typical Practices
    • Bring Your Own Overseas Public IP Address to the Cloud
    • IPv6 Public Network Access
    • Save Public Network Costs
    • TCP Port 25 Restriction Description
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  • Operation steps

IPv6 Termination

Updated at：2025-10-16

Baidu AI Cloud integrates IPv6 termination for EIPs, enabling IPv6 access capabilities for Baidu Cloud Compute and load balancers bound to EIPs. Users do not need to alter their current service architecture deployment. By activating the IPv6 termination function on an EIP, IPv6 addresses can be obtained, allowing services to support IPv6 access. IPv6 client traffic to this address will be converted to IPv4 traffic, achieving seamless compatibility between user services and IPv6 networks.

IPv6 address allocation principles:

When enabling IPv6 termination, a global IPv6 address will be assigned in the format of the "2400:da00:404:2::" prefix combined with the EIP's IPv4 address (128-bit IPv6: fixed 96-bit prefix + 32-bit IPv4).

Each EIP is assigned one IPv6 address. If the IPv6 termination function for an EIP is disabled, this IPv6 address will be reclaimed by the system.

Note:

The IPv6 termination feature of Baidu AI Cloud will be discontinued on April 1, 2024. Afterward, all previously assigned IPv6 addresses for EIPs will be reclaimed by the system.

Operation steps

  1. Go to the EIP instance list, select the EIP instance for which you wish to enable IPv6 termination, ensuring the instance is in the "Available" or "Bound" status.
  2. Click the "Enable IPv6 Termination" button from the batch operations list. Upon confirmation, the system assigns an IPv6 address to the specified EIP.

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  1. Users can bind DNS domain names to the allocated IPv6 addresses or directly provide IPv6 access to clients.
  2. EIPs with IPv6 termination enabled can monitor bandwidth, traffic, and packet rates and set up corresponding alarm strategies.

image.png

  1. To disable the IPv6 termination feature, select the relevant EIP and click "Disable IPv6 Termination" from the batch operations list.

Note:

  • Once IPv6 termination is enabled, the source IP address of IPv6 network traffic will be converted within a fixed range (180.76.40.0/24) into an IPv4 address. Security group and ACL policies must be configured to allow this range. Otherwise, traffic will be blocked due to user-defined security policies.
  • If access traffic at Layer 7 uses the HTTP protocol, the client's IPv6 address will be recorded in the HTTP X-Forwarded-For header field, enabling service processing based on the source IPv6 address.
  • Only EIPs in the ranges 180.76.0.0/16, 182.61.0.0/16, 106.12.0.0/16, and 106.13.0.0/16 support IPv6 termination. Other IP segments are not supported at this time.

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