kubernetes/kops · error

error modifying AAAA records: %w

Error message

error modifying AAAA records: %w

What it means

ModifySubnetAttribute failed while enabling the resource-name AAAA record on launch for a subnet that has an IPv6 CIDR; the wrapped error is the AWS EC2 API response.

Source

Thrown at upup/pkg/fi/cloudup/awstasks/subnet.go:353

		} else {
			request = &ec2.ModifySubnetAttributeInput{
				SubnetId:                             e.ID,
				EnableResourceNameDnsARecordOnLaunch: &ec2types.AttributeBooleanValue{Value: changes.ResourceBasedNaming},
			}
			_, err = t.Cloud.EC2().ModifySubnetAttribute(ctx, request)
			if err != nil {
				return fmt.Errorf("error modifying A records: %w", err)
			}
		}

		if fi.ValueOf(e.IPv6CIDR) != "" {
			request = &ec2.ModifySubnetAttributeInput{
				SubnetId:                                e.ID,
				EnableResourceNameDnsAAAARecordOnLaunch: &ec2types.AttributeBooleanValue{Value: changes.ResourceBasedNaming},
			}
			_, err = t.Cloud.EC2().ModifySubnetAttribute(ctx, request)
			if err != nil {
				return fmt.Errorf("error modifying AAAA records: %w", err)
			}
		}
	}

	return t.AddAWSTags(*e.ID, e.Tags)
}

func subnetSlicesEqualIgnoreOrder(l, r []*Subnet) bool {
	var lIDs []string
	for _, s := range l {
		lIDs = append(lIDs, *s.ID)
	}
	var rIDs []string
	for _, s := range r {
		if s.ID == nil {
			klog.V(4).Infof("Subnet ID not set; returning not-equal: %v", s)
			return false
		}

View on GitHub (pinned to 4c8573c808)

Solutions

1. Check ec2:ModifySubnetAttribute permissions
2. Verify the subnet's IPv6 configuration, then retry the apply

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/awstasks/subnet.go:353 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of kubernetes/kops@4c8573c808 (2026-09-05). Data as JSON: /api/errors/6d257e41432631e3. Report an issue: GitHub.