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macdanif's avatar
macdanif
Tutor
Nov 09, 2021

Nighthawk R7850 Losing DNS after latest firmware update

I have a Nighthawk X6 R7850.  I have it connected to a Spectrum Cable Modem.  After the latest firmware update, I have noticed it randomly loses DNS.  What I mean by this, is that DNS resolution fails.  My wireless devices stop being able to make new connections and the wifi says connected without internet.  My wired devices are unable browse or ping by name.  The wifi radio still shows available and none of the actual network connectivity fails, the router just stops responding to DNS queries.  It is completely random.  Sometimes, it happens twice a day, sometimes it won't happen for 3 days, but it happens quite often.  A reboot of the router generally solves the issue.  I have had this router for almost 2 years and this just started with the latest firmware update.  (router information at the bottom)  I have changed the DNS server settings to use public DNS servers instead of the ISP default.  What's strange is, I can ping the DNS servers when this happens, so it is not a connectivity issue.  I have searched all types of forums and come up empty.  Is anyone else experiencing this problem and/or have a solution?

 

Thanks,

 

Michael

 

Hardware VersionR7850
 
Firmware VersionV1.0.5.76_10.1.82
 
GUI Language VersionV1.0.4.70_2.1.49.1
 
LAN Port 
 
MAC Address3C:37:86:77:4C:E1
 
IP Address192.168.1.1
 
DHCPOn
 

5 Replies

  • plemans's avatar
    plemans
    Guru - Experienced User
    Nov 09, 2021

    Its happened across multiple product lines. 

    Some have been fixed by enabling ipv6

    others by using a different dns provider. 

    And some have had to downgrade the firmware back a version. 

     

    Not sure what method will work best for you. 

    • macdanif's avatar
      macdanif
      Tutor
      Nov 09, 2021

      I did see another article for a different model where doing factory reset resolved the problem.  I have done that today and restored my settings.  Will give it a couple days and see how it goes.

      • plemans's avatar
        plemans
        Guru - Experienced User
        Nov 09, 2021

        Let us know if that solution worked for you!

  • macdanif's avatar
    macdanif
    Tutor
    Nov 11, 2021

    Sadly, the factory reset did not work.  And now as a consequence, Circle has stopped working altogether.  I had another instance of the router losing DNS resolution.  The loss of circle kind of kicks it for me.  I have a teenage and 6 year old daughter with connected devices, that I count on circle for controlling screentime and content.  Whatever netgear has done/is doing with their product line, they need to get this fixed.  I am not going to waste time with weeks of troubleshooting.  I have already purchased a new product to replace this router.  I felt that this router was a superior product for the majority of the time that I've owned it, but the last couple months have been stressful.

    • plemans's avatar
      plemans
      Guru - Experienced User
      Nov 11, 2021

      Did you try downgrading the firmware?