Blinking upstream light

There's no option to disable IPv6, only the firewall. There's no option set priority either. This sure is an expensive piece of equipment to have so few options in the administrative settings. I've been in talks with Xfinity's corporate office for about 2 weeks now, and they've escalated this to their tier 3 techs, because they've already been out here and replaced every single inch of their equipment on my property twice. The techs say they rarely come across a signal as clean as mine. It literally couldn't be more directly connected from the pole to the box, and from the box directly to my modem. From there it's just a cat 6 ethernet cable to my Xbox. I'm personally out of options, and since Netgear already replaced the unit, Best Buy won't touch it. So if this doesn't get resolved in the next week, i'm going to need Netgear to issue a refund. I've dealt with this for too long, and spent way too much money to recieve the lack of support i'm getting from both sides. I'm ready to take my refund and completely cut ties with both companies at this point.