My Orbi RBR752 drops IPv6 every hour or so.

Your lucky, every hour. My RBK853 it's whenever. Whereas, on the RBRK853 up until the mid-v3s FW, IPv6 was rock solid. Then there were some changes and one was on the IPv6 Set Up Page that makes no sense and that's when my connection crapped out. Since we are up to v4.x FW, nothing has been done and we can't rollback, IPv6 is so very flaky . . . at best.

I wouldn't be surprised if it's the newer FW. I have Centruylink Gigbit Fiber and go directly from the ONT to my RBR850/SKX30/RAXE500. The ONT, a Calix, I got for free with a C3000A router. The CL UI is fantastic and setting up IPv6 is a bit of a chore, but it is so great in the end. The Installer, a Field Manager, said he knew I was the type that would change everything out. So he showed me how to handle the Fiber and gave me a print out of all the paperwork that they have that covers my connection to them, i.e., PPPoE Login and PWs. The IPv6 setup had no special requirements.

On my RAXE500, IPv6 is pretty solid. But I do think I have noticed hiccups. I understand that a new version of FW may come this week and we'll have to see what it does. If it does not break it. Hopefully, unlike the RBR850, I'll be able to revert, if so.

But IPv6 connections seems to be a NG Product wide issue. And if not now, don't be surprised if it shows up in future after a FW update. Then it's time to hit the Forums and let everyone, NG, know that after this or that the IPv6 works, doesn't, kinda does . . .