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Forum Discussion
RAX120 Router Random Disconnects
Hey everyone, I know that I'm not the only one with problems on the Nighthawk WiFi 6 devices, but thought I'd post my most recent headache. My hardware consists of a Motorola MB8600 DOCS 3.1 modem w/...
I have the exact same issue. Running fine since December until this pops up in early March with 0 changes from me. This is bizarre. What happened in March to set this off for everyone? Is it related to daylight savings somehow?
I'm betting there is a code issue that was triggered after the DST change. I've thought about disabling it to see if it makes a difference. Not a big deal if the router clock is an hour off.
Regarding the issue, I'm running for over 24 hours without a failure after a factory reset and manually changing my config to match my preexisting setup. It was a big PITA since I have 75 clients on my ACL, some port forwarding, and reserved IPs. If this becomes a thing that needs to be done every few months, it's going to be a major hassle. Anyway, if I make it through a week with no issues, great. If not, I'll try a cronjob running every 30 minutes with ./etc/init.d/dnsmasq restart. Hopefully that will fix me for the long term until I can deploy a more enterprise class solution.
"What happened in March to set this off for everyone?" (FiatNox)
Just an observation: “Mozilla has started rolling out encrypted DNS-over-HTTPS (DoH) by default for US users of the nonprofit's Firefox browser.” (25 FEB 2020; Firefox now defaults to DNS-over-HTTPS for US netizens)
Also: “In the US, Firefox by default directs DoH queries to DNS servers that are operated by CloudFlare” (Firefox DNS-over-HTTPS)
Is this observation a piece of the puzzle, in a way that has yet to be identified?
It *MIGHT* be the really short TTL's on some DNS hosts (short TTL and wrong time settings means your DNS cache expires as soon as the entry hits). Might be the issue with the caching DNS server on the router expiring entries and getting stuck in a constant loop. PCAP outside interface of the router and see if the requests to external dns happens over and over again. GMT/UTC should have been used in the code, and the router should update the local time based of NTP somewhere. Maybe a code bug doesn't update dnsmasq with the correct GMT offset or somehting. I would pull your "/etc/dnsmasq.conf" if you can via telnet and also see if you have access to tail "/var/log/syslog" or wherever netgear keeps the dnsmasq logs. There might be something interesting in there.
As soon as I get my AX12 and EX8000's installed I guess I'll find out if I hit this bug as well.