I assume the link has changed meantime, try this:Cisco Feature NavigatorOr rather you can access from the Cisco's main page => Support => Tools and resources => All support tools => Cisco Feature Navigator.
As far as my current experience SVL is not natively supported in DNA-C (or CAT-C). What I have used for Day0 is - Jinja tempalte:{# Configure SVL and DAD interfaces #}....{# Set the SWV priority and reload the device #}event manager applet POST_PNPev...