5Ghz radio stopped working? AC3200

[mscreations]

Hello,

Today, my router's 5GHz radio quit working. It is only connected to one device which is a Netgear EX7000 extender (with fast-lane enabled). Everything on the extended network quit working altogether. I tried connecting a laptop direct to the router, but accessing the web page indicated that the device was not made by Asus. I reset the device manually and everything rebooted okay and is working normally again. I checked the system logs after it rebooted, and I found that prior to the reboot, I have a bunch of lines that all say:

kernel: osl_pktfastfree: free skb for NULL ctfpool

Is this something I should worry about?

Also, while looking through my logs, I found one device that had a whole bunch of DHCPREQUEST and DHCPACK messages (once per minute for hours at a time). The device is a Sonoff Basic flashed with Tasmota. I have two of them with the same exact firmware and only one of them seems to be doing this. Any ideas on what I might want to check with it?

Router:
RT-AC3200 Merlin 380.69
Extender:
Netgear EX7000 V1.0.0.62_1.0.122

 

[st3v3n]

mscreations; Welcome. Not mscreations as in microsoft? A post involving an RT-AC3200 gets my interest as we have one. Is your traffic protected with encryption or do you use a commercial VPN? If your equipment is working well again, this hasn't ever happened before and doesn't happen again, maybe all is well. A similar line of code, not exactly the same one you posted was shown on a page that pulled up on searchcode.com, dated 2010, but don't know what it's referring to. Did you try internet searches with the line, or portions of the line? (hopefully it doesn't have anything to do with kernel-porn; joking, I don't know). There are others on the forum who hopefully will see your post and be able to tell you. Good luck.