A public IPv6 network is available and attached to your Vultr Cloud Compute instance after deployment unless disabled by default. You can manage the IPv6 address information on an instance and enable reverse DNS on the public networking interface.
Follow this guide to manage the IPv6 information on a Vultr Cloud GPU instance using the Vultr Customer Portal, API, CLI, or Terraform.
Send a GET
request to the List Instances endpoint and note the target instance's ID in your output.
$ curl "https://api.vultr.com/v2/instances" \
-X GET \
-H "Authorization: Bearer ${VULTR_API_KEY}"
Send a GET
request to the Get Instance IPv6 Information endpoint to view the instance's IPv6 information.
$ curl "https://api.vultr.com/v2/instances/{instance-id}/ipv6" \
-X GET \
-H "Authorization: Bearer ${VULTR_API_KEY}"
Send a GET
request to the Create Instance Reverse IPv6 endpoint to create a new reverse DNS entry using the IPv6 address.
$ curl "https://api.vultr.com/v2/instances/{instance-id}/ipv6/reverse" \
-X POST \
-H "Authorization: Bearer ${VULTR_API_KEY}" \
-H "Content-Type: application/json" \
--data '{
"ip" : "<ipv6-address>",
"reverse" : "<domain>"
}'
List all instances in your Vultr account and note the target instance's ID.
$ vultr-cli instance list
List the instance's IPv6 network information.
$ vultr-cli instance ipv6 list <instance-id>
Create a new IPv6 reverse DNS entry on the instance.
$ vultr-cli instance reverse-dns set-ipv6 <instance-id> --entry <domain> --ip <ipv6-address>
Terraform can enable or disable IPv6 for a Cloud GPU instance at creation time. Managing existing IPv6 addresses or reverse DNS records after deployment is not supported directly in Terraform and must be done through the Vultr Customer Portal, API, or CLI.
Open your Terraform configuration for the existing Cloud GPU instance.
Enable IPv6 on the instance and (optionally) set reverse DNS.
# Enable IPv6 on the instance
resource "vultr_instance" "gpu" {
# ...existing fields (region, plan, os_id, label, etc.)
enable_ipv6 = true
}
# Optional: set reverse DNS for the instance's primary IPv6
# (v6 address is known after the instance exists)
resource "vultr_reverse_ipv6" "gpu_ptr" {
ip = vultr_instance.gpu.v6_main_ip
reverse = "host.example.com."
}
Apply the configuration and observe the following output:
Apply complete! Resources: 0 added, 1 changed, 0 destroyed.
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