Do you want Cox to assign your modem a public IPv6 address, or do want your router to have and to assign private IPv6 addresses to your devices?
I would like to assign private IPv6 addresses to my devices.
This wouldn't have anything to do with Cox. Cox can't activate a feature or manage your router.
If Arris states IPv6 is automatic, you'll need to dig into the manual to figure it.
UPDATE: I researched the User Manual and there's no mention of "IPv6"...let alone private IPv6. Although the product description reads "Supports IPv4 and IPv6," it may be referring to an ISP assigning your modem a public IPv6 address.
