Posted: Mon Oct 05, 2020 18:05 Post subject: R7000 recently started rebooting
I'm looking for some thoughts on what may be triggering recent random reboots on my ~2.5 year old R7000. Everything has been extremely stable for months, last software change was to DD-WRT v3.0-r43171 in May of 2020, no issues until last week started noticing random reboots of the hardware. I turned on logging and started to save to a USB drive and caught one reboot. I've made no other configuration changes on the system.
There isn't a big error message but I notice a few things:
There are two sets of time-date stamps on the logging. With the correct time I see requests to NTP servers every hour and some of these messages "kern.warn kernel: br0: received packet on eth2 with own address as source address"
With the incorrect time I see messages like "dnsmasq-dhcp: DHCPACK(br0) 192.168.1.29 c0:8c:71:43:f9:0c jen_phone" and "dnsmasq: possible DNS-rebind attack detected: sinkhole.netmng.com"
Is there a reason for two sets of time-date stamps to be running in tandem? Is this a signature of a hardware or software fail that explains the reboots?
One update on this, it may have been caused by the USB drive that was plugged into the router as a NAS. On a whim I have disconnected the drive after getting multiple reboots hours apart. Since that time I've gone 48 hours without any problems.