R7000 recently started rebooting

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tavernip
DD-WRT Novice


Joined: 20 May 2020
Posts: 4

PostPosted: Mon Oct 05, 2020 18:05    Post subject: R7000 recently started rebooting Reply with quote
Howdy,
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[4980]: DHCPACK(br0) 192.168.1.29 c0:8c:71:43:f9:0c jen_phone" and "dnsmasq[4980]: 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?
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tavernip
DD-WRT Novice


Joined: 20 May 2020
Posts: 4

PostPosted: Thu Oct 08, 2020 14:15    Post subject: Reply with quote
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.
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 6646
Location: Netherlands

PostPosted: Thu Oct 08, 2020 14:27    Post subject: Reply with quote
Power problem .i.e. the USB drive is drawing too much power and/or possibly your power adapter is failing?
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