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Forum Discussion

cdysthe's avatar
cdysthe
Virtuoso
Mar 17, 2022

My Orbi RBR752 drops IPv6 every hour or so.

I have had my Orbi RBR752 (with the latest firmware) set up with IPv6 for a year on a Xfinity gigabit connection through a Netgear CM2000 modem. A few days ago I was changing the DNS settings for IPv...
plemans's avatar
plemans
Guru - Experienced User
Mar 17, 2022

what firmware version are you on?

I'm using a RBK752 on xfinity with ipv6 enabled. (I switch routers a lot)

cdysthe's avatar
cdysthe
Virtuoso
Mar 17, 2022

Firmware is latest as far as I know: V4.6.5.14_2.0.54

I have had IPv6 enabled and working on this firmware until a few days ago when it now drops after an hour. I have to go in and disable/enable it again and it works for another hour or so. So this is a new problem. I have not made any changed to my system, same router/satellite/modem/connection. Maybe I have to factory reset? Restart the modem? I can't figure this out.

 

  • plemans's avatar
    plemans
    Guru - Experienced User
    Mar 17, 2022

    You can try factory resetting the router/modem if you'd like. 
    It could just be a xfinity issue. 

    It shouldn't impact much services if ipv6 is disabled. 

    It comes disabled from default and many don't even enabled. 

    • cdysthe's avatar
      cdysthe
      Virtuoso
      Mar 20, 2022
      I have found that many have this IPv6 issue with Orbi systems on Comcast/Xfinity connections. Have a look here:

      https://is.gd/cecoro

      I really hope Netgear will fix this through a firmware update since Comcast won't redo their vCMTS implementation which seems to be causing the problem. Until that happens I'm wasting my time trying to fix this and will keep IPv6 disabled.
    • cdysthe's avatar
      cdysthe
      Virtuoso
      Mar 22, 2022
      FURRYe38 wrote:

      Please confirm same thing happens on v.5:

      https://community.netgear.com/t5/Orbi-WiFi-6-AX-and-WiFi-6E-AXE/New-RBR750-RBS750-Firmware-Version-v4-6-7-5-Released/m-p/2182131/highlight/true#M25411

       

      I have now run with the latest firmware 4.6.7.5_2.1.7 and the problem is partly solved. There's still issues with Auto Detect not detecting DHCP but rather 6-4Tunnel. I have to disable IPv6, then enable it again and specifically choose DCHP to get IPv6 to work as intended and like it has in the past. However, the setting now sticks and the IP has not dropped after an hour like it did on the previous firmware. That was the most serious problem. I have had working DHCP based IPv6 working for a couple of days but getting the problem with getting DHCP to work and an IP set needs to be fixed.

      • cdysthe's avatar
        cdysthe
        Virtuoso
        Mar 27, 2022

        Hi @FURRYe38

         

        Unfortunately IPv6 was lost again today, it has been working for 5 days. I am on firmware V4.6.7.13_2.1.9 which should be the latest. It kept saying "Not Available"  under "Router's IPv6 Address On WAN" and I had to disable/enable IPv6 a couple of times since Auto Detect only gave me 6to4tunnel. I set DHCP and finally got an IP however, it should not drop like that and Auto Detect should find DHCP for IPv6 which is supported and working on my Xfinity connection with other routers.