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ssgtweasel's avatar
ssgtweasel
Guide
Mar 25, 2020

RBR50 Internet outage - DNS issue

Woke up this morning and not able to access internet. This seems to be intermittent issue for the past few weeks. Besides this morning, this happened maybe a few days ago and then a few times the pre...
ssgtweasel's avatar
ssgtweasel
Guide
Mar 25, 2020

Suddenlink is ISP (cablemodem)

Arris SB6190 cablemodem

 

FURRYe38's avatar
FURRYe38
Guru - Experienced User
Mar 25, 2020

Let us know if a full power off and back on with both modem and RBR helps...

 

That modem model has known vulnerabilities just FYI: 

http://www.badmodems.com

 

  • ssgtweasel's avatar
    ssgtweasel
    Guide
    Mar 25, 2020

    I will test later thanks

    I guess I don't see how the SB6190 cable modem could be causing the issue if only rebooting the Orbi RBR50 solved the issues I had this morning.

    • SW_'s avatar
      SW_
      Prodigy
      Mar 25, 2020

      ssgtweasel , you're not alone running into Orbi DNS bug.  There are several threads with similar issues.  There's no fix from NG yet, but there are few workarounds.  Here is an example of a good workaround until the real fix is released:

       

      dbwiddis wrote:

      ...

      Eventually I found that using the GUI to "release" and "renew" DHCP solved the problem without a reboot, and after a bit more research, traced the problem to the "dnsmasq" service running on the router as part of Circle.  I was (and am) able to recover the DNS by telnetting into the router and executing "/etc/init.d/dnsmasq restart".

      ...

      Check this post for more details.  Good luck!

    • FURRYe38's avatar
      FURRYe38
      Guru - Experienced User
      Mar 25, 2020

      If the system had been working up to this morning, then this may point to an ISP/Modem issue. Hopefully the power cycle will help here. 

       

      Just added the info link about the problems with the 6190 for your info only. 

      ssgtweasel wrote:

      I will test later thanks

      I guess I don't see how the SB6190 cable modem could be causing the issue if only rebooting the Orbi RBR50 solved the issues I had this morning.