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Forum Discussion
FirstCup
Nov 06, 2025Guide
IPV6 no connection RBR 850
I called my ISP and they confirmed I have an ipv6 connection available from them on a fiberoptic connection to my Orbi RBR 850 which will not transmit ipv6 to my network and when I run an online ipv6...
CrimpOn
Jan 09, 2026Guru - Experienced User
For me, RBR50 with Spectrum Cable handles IPv6 fine except that it does not allow inbound connections to public IPv6 addresses. testipv6.com scores my connection 10 out of 10.
(as a footnote, there is a Debug option, "Allow external IPv6 hosts ping internal IPv6 hosts", which does exactly what it says. When enabled, I can ping internal IPv6 hosts from the internet.
The problem is that I want to connect to internal hosts, not merely ping them.)
So, I have one specific model of Orbi and one specific ISP that appear to support IPv6.
RBR850 fails with Cox fiber, Xfinity, and with Hood Canal Fiber. (newer firmware only)
not a lot of data points