Does Private DNS support wildcard resolution?
Yes, wildcard resolution is supported whether the subdomain recursive resolution proxy feature is enabled or not.
Do I need to modify the DNS configuration when using Private DNS?
No.
To use Private DNS (PrivateZone), you only need to activate the service in the Alibaba Cloud DNS console. You do not need to modify the DNS settings of your Elastic Compute Service (ECS) instance. Use the default DNS settings 100.100.2.136/100.100.2.138. After activating the service, you can add zones, configure resolution records, and set effective scopes.