Complex sentence: ControlNet was earlier supported by ControlNet International, but in 2008 support and management of ControlNet was transferred to ODVA, which now manages all protocols in the Common Industrial Protocol family.
Split into simpler sentences: ControlNet was earlier supported by ControlNet International, but in 2008 support and management of ControlNet was transferred to ODVA. ODVA now manages all protocols in the Common Industrial Protocol family.