Is ignorance a kammically active volitional formation, or a kammically passive fruit of past kamma?

As the title indicates, I'm not sure how to classify 'avijja' in Dependent Co-arising: Is it a volitional formation which produces a certain kind of vipaka, or is it a vipaka in itself? In Bhikkhu Bodhi's translation of the Samyutta Nikaya,in the preface, there's a section dedicated to explain some words and their specific translations. In there, sankhara (as a nidana) is defined as one of the kammically active factors, alongside with ignorance and craving. Do you agree with this interpretation? Thanks in advance, and kind regards!