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Solved
870 with DNS issue
I'm having issues with DNS on my RBE870 with 1 satellite. I have fiber to the house from Visionary Broadband. All my cables are cat 6A shielded (including ethernet to the satellite). The 870 is connected directly to the modem (fiber to IP device). Router is set to use the modem DNS servers (google). Everything will be fine for a couple of hours after a router reboot and then suddenly you can't surf. When this happens I can ping any actual IPs but not any site like the url for google or yahoo. This happens on phones, Macs, Windows and tablets. If I add DNS servers to the computers/phones/tablets everything is fine. I have tried adding DNS severs to the router with no change (Cloudflare/Quad9/Open DNS/Google). Router & Satellite both have the most current firmware (V10.5.20.4_1.3.5). Anyone have any ideas?
Thanks
Jay
I now have a solution for this issue. This is what I got from Netgear. I have now been up for a few days with no DNS issues.
A Deep Hardware NVRAM Reset
Sometimes during factory firmware updates, the underlying memory partitions for the DNS engine do not clear properly, causing them to choke quickly on CGNAT packet tables. • With the Orbi powered on, take a paperclip and press and hold the physical Reset button on the back of the router for a full 30 seconds until the power LED flashes amber. • Set the router up completely from scratch as a brand-new system. Do not restore settings from a backup file. This forces the firmware to cleanly rebuild its internal DNS routing architecture from scratch.
16 Replies
What actual modem/gateway do you have? (model)
Are you using IPv6?
Did you change the ipv6 dns servers as well? Not just the ipv4?
ipv6 has been broken for a while with the defaults servers.I now have a solution for this issue. This is what I got from Netgear. I have now been up for a few days with no DNS issues.
A Deep Hardware NVRAM Reset
Sometimes during factory firmware updates, the underlying memory partitions for the DNS engine do not clear properly, causing them to choke quickly on CGNAT packet tables. • With the Orbi powered on, take a paperclip and press and hold the physical Reset button on the back of the router for a full 30 seconds until the power LED flashes amber. • Set the router up completely from scratch as a brand-new system. Do not restore settings from a backup file. This forces the firmware to cleanly rebuild its internal DNS routing architecture from scratch.
