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R6220 Stops Forwarding DNS Requests
Hello, I recently purchased a Netgear Genie R6220 Wireless router. The firmware is currently V1.1.0.31_1.0.1. I have noticed that every hour or so, DNS queries outbound begin to fail. This happen...
And as a point of clarity to the above post for anyone reading this:
"This time, I manually set my DNS records on my PC so that they weren't forwarded to the the IP of the router, but the IP of a DNS server, and web browsing works again. Set them back to the router, and browsing fails."
The manual IPs I set for DNS servers was 8.8.8.8 and 4.2.2.2.
The configured DNS forwarders on the Netgear were also 8.8.8.8 and 4.2.2.2.
So they were both pointed to the same servers, but having the netgear forward the request fails.
Solution: Bypass netgear handling of DNS and use the netgear as an AP-only. Unfortunate, because AP mode turns off a lot of advanced features of the netgear.
Joe
This just occurred again. And this time I hard wired in and tested from a wired connection into the Netgear R6220 and DNS queries were still failing in the same fashion.
So, you are saying you see the packets go out on wireshark, but nothing come back? Sounds like a ISP issue. Have you tested directly connected to the modem?
Do you have another cable to use between the router and modem? If you do, try that..
Thanks for the response.
To clarify on your question:
So, you are saying you see the packets go out on wireshark, but nothing come back?
Sort of. The wireshark analysis shows that the DNS request standard request is sent to the netgear, but there is never any standard response from the netgear. When performing correctly, a standard response is received from the netgear, the payload of which being the IP Address of the domain you are trying to reach. I cannot analyze the traffic on both sides of the Netgear without putting a device in between it and the modem.
I have tested with all new cables.
The problem does not exist without the netgear in place.
Through process of elimination, I have discovered that this issue seemingly only occurs when the router has a USB Device (small, portable 250GB HDD) plugged into its USB port in the back. Unplugging the external device let me browse correctly for over 6 hours, then plugging a drive back in and waiting about an hour and DNS queries were failing again.
Seems like there may be a CPU or memory leak on the device regarding the Readyshare, to which hitting "Apply" may restart some processes and thus free up resources. Unfortunately, there is no visibility into the unit beyond some basic logs.
FWIW: The only ReadyShare configuration I had enabled was the SMB connector.
Joe
Readysahre seems to be hit and miss on these routers. Something I do not use. Alot of router user's just resorted to true NAS devices, to overcome the readyshare shortcomings..
Ugh. It *was* working fine, and now without a USB Drive plugged in the same thing happened. This time, I manually set my DNS records on my PC so that they weren't forwarded to the the IP of the router, but the IP of a DNS server, and web browsing works again. Set them back to the router, and browsing fails.
My next step is to put the Netgear into AP mode (bridge mode), take my modem out of bridge mode, let my modem handle DHCP/Firewall rules/DNS.
A shame, I like the interface of the netgear :(, and the ISP modem leaves a lot to be desired.