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Forum Discussion
PedroA
May 29, 2026Tutor
Orbi 770, ipv6, Gigaclear - works then drops
I'm trying to get my Orbi 770 to have a stable ipv6 connection with my ISP Gigaclear. Initially it works, then it doesn't. The Orbi 770 is running Firmware Version V10.5.20.10_2.2.51 My conne...
PedroA
Aug 11, 2026Tutor
Somehow, it's now working. I've not changed the firmware on the Orbi 770 (still V10.5.20.10_2.2.51). Ok the Windows PC will have installed whatever updates Microsoft rolls out, ditto my laptop and my Android phone has new updates. Perhaps in the background my ISP changed something.
But now I have stable (4 weeks +) IPv6 and I score 10/10 on
The IPv6 settings in the 770 are:
Internet Connection Type: Auto Config
DHCP User Class (if Required): blank
DHCP Domain Name (if Required): blank
Router's IPv6 Address On WAN: Not Available
IPv6 Domain Name Server (DNS) Address
Use These DNS Servers
Primary DNS: 2606: 4700: 4700: 0000: 0000: 0000: 0000: 1111
Secondary DNS: 2620: 00FE: 0000: 0000: 0000: 0000: 0000: 00FE
LAN Setup
Router's IPv6 Address On LAN
2a06_hidden/64 (not entered by me)
IP Address Assignment
Auto Config
Enable RIPng: not ticked
Use This Interface ID: blank
IPv6 Filtering: Secured
- FURRYe38Aug 11, 2026Guru - Experienced User
Good to hear.
ISP and Device levels can effect what happens on IPv6. Not just the router FW.
Glad its working better.
- ceebee6ccAug 11, 2026Tutor
That’s good to hear; no change here but a different model (the 870) and my firmware version is an older revision than you’re showing, so they may get around to fixing mine in a few months ~:)
Router RBE871 RBE871 V10.5.20.4_1.3.5 No new firmware version available. - FURRYe38Aug 11, 2026Guru - Experienced User
Give same configuration as this users configuration while on same ISP. If it doesn't work, you'll need to keep IPv6 disabled until next FW update appears for your 870 series.