TPIAs like TSI handle the routing. But IP allocation (like DHCP or PD) is done by the incumbent. So while TSI's network is already IPv6-ready, the incumbent still needs to handle the IP allocation part.Rogers cable "direct" customers actually had IPv6 enabled before Teksavvy-on-Rogers customers did. So either TSI has independent control of IPv6 on their network, or (more likely) Rogers themselves chose when to grant IPv6 access to the TPIA's using their infrastructure.