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RBR850 frequently issuing DNS REFUSED responses
Had the RBK852 now for just over a month, and have an issue I'll open a support ticket for. Wondered though if others have been experiencing anything similar. Basically and since day 1 after put...
Good Luck. This issue is resolved by the beta thats available.
Something like this will do:
copy /usr/sbin/dnsmasq to /overlay/upper/usr/sbin/orbi-dnsmasq
make a file called dnsmasq in /overlay/upper/usr/sbin (this will hide the original dnsmasq from the running os) with the following lines:
#!/bin/sh
mkdir /tmp/dns
echo "nameserver 8.8.8.8" > /tmp/dns/resolv.conf
echo "nameserver 8.8.4.4" >> /tmp/dns/resolv.conf
/usr/sbin/orbi-dnsmasq -h -n -c 0 -N -i br* -r /tmp/dns/resolv.conf -u root
Thank you for posting these instructions. I have been working with Netgear support but they jsut suggested I return the device to the store vs troubleshooting.
I enabled telnet on the Orib and connected via the Windows built in telnet client. When I try to run the first line I get an error saying "copy: not found"
root@RBR750:/tmp/dns#
root@RBR750:/tmp/dns# copy /usr/sbin/dnsmasq to /overlay/upper/usr/sbin/orbi-dns
masq
/bin/ash: copy: not found
Am I missing a step?
You have to use Linux commands I believe. For example "CP" for Copy function.
May be Retired_Member can write exact commands to execute.
Yes I could do that, but I see there is a big risk for people to brick their Orbi-routers when not used to work on unix-systems.
And I would not be responsible for this, as my guide could may be missread or badly written by me :)
I have reported the bug found in dnsmasq and I hope Netgear will work on this and make a patch for everyone to install.
If you are using Windows, the easy and safe workaround is to set the DNS settings for your network connection to go directly to the DNS server IP address instead of through the Orbi. This workaround worked for me on my Windows laptop and eliminated the intermittent DNS failures. I used google DNS 8.8.8.8 but you can substitute your ISP's DNS address instead.
- Hit the Windows key and search for "control panel"
- Network and Internet
- Network and Sharing Center
- On the left, Change Adapter Settings
- For each wi-fi or other network adapter used, right-click and select Properties
- Select Internet Protocol Version 4 (TCP/IPv4) in the list and press Properties
- The second checknox is set to Obtain DNS Server Address Automatically. Change it to Use The Following DNS Server Addresses
- Enter 8.8.8.8 and 8.8.4.4 (the Google DNS addresses)
- Press OK
Now it should bypass the Orbi for DNS and go straight to the DNS servers.
Same problem with RBR750.
Retired_Member wrote:Yes I could do that, but I see there is a big risk for people to brick their Orbi-routers when not used to work on unix-systems.
And I would not be responsible for this, as my guide could may be missread or badly written by me :)
I have reported the bug found in dnsmasq and I hope Netgear will work on this and make a patch for everyone to install.
Retired_Member wrote:Yes I could do that, but I see there is a big risk for people to brick their Orbi-routers when not used to work on unix-systems.
And I would not be responsible for this, as my guide could may be missread or badly written by me :)
I have reported the bug found in dnsmasq and I hope Netgear will work on this and make a patch for everyone to install.
I had the same problems w/ my 750 and tried all the troubleshooting steps as well as opening a support case with Netgear. I was unable to fix the issue with DNS.
I ended up just flipping my cable modem (Xfinity) back to router mode and set the Orbi to AP mode. You really don't lose a lot of functionality (I can still see which devices are connected to each satellite in the Orbi application) in AP mode. This fixes the DNS issue as your cable modem takes over this functionality. Strange you have to do this for such a high end system...but the signal strength/wired satellites makes it worth keeping.
