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RT-AC68U and miniupnpd problems

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fbreve

Regular Contributor
I'm constantly having problems with miniupnpd in RT-AC68U. After a day or two, the log is filled with these error messages:

May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files
May 17 15:48:48 miniupnpd[692]: accept(http): Too many open files

Rebooting it or killing minihttpd and restarting it fix the problem, but it will happen again after a day or two.

It happens with all firmware versions. It even happened with RT-AC66U as well. I don't know how to fix this and it seems that I'm the only one with this problem as I couldn't find any other reference on Google.
 
I suspect you have a device or a program running on your network that's broken, and incorrectly interacting with the UPNP server, perhaps spamming it with forward requests.
 
Thanks RMErlin.
Is there any way to track calls to miniupnpd?
There is only a few entries in the "Port Forwarding" section.
 
Thanks RMErlin.
Is there any way to track calls to miniupnpd?
There is only a few entries in the "Port Forwarding" section.

Not that I know, unless there's a debug option that could be enabled in upnp.conf. Check the miniupnpd documentation.
 
I found out the culprit was an Iomega NAS. I turned it off and everything is fine now.

This problem was happening with two different networks and in both cases it was an Iomega NAS causing trouble.
 
Hello,

My apologies, I am a long time follower of this forum, but first time poster and I need some (noob) help. I previously had an Asus RT-AC87U and had no issues for a long time. Shortly after redoing my kitchen, my WiFI started to act up as in dropping the connection, range became bad so I assumed it was kitchen interference, so I relocated the Asus router in my living room away, further away from the kitchen, to help correct any possible interference. That didn't resolve the issue, so I assumed perhaps that something caused my AC87U to fail and that it needed replacement. To make this long story short, I replaced my RT-AC87U with the Asus RT-AC88U, still relocated in the living room and I am still experiencing the latency as far as speed, but connectivity seems to be "better"?

About my connection, I have a 200 Mbps DL and 10 Mbps UL package and I get those speeds running a speed test on the LAN connection, but when I am on 2.4 wireless, I often get get 2 Mbps or something ridiculously low like that within say 15-20 feet of the router.

As far as devices on my network, I have about 60 devices, the majority of which are smart devices (Alexas and Wemo switches). I am running Merlin 380.69 firmware and the only thing jumping out at me is that Core #2 is often showing 100% and the System Log keeps showing the below error. I am not sure if this could cause this latency on my wireless, but I thought it was my NAS drive syncing, but after disabling that, I keep showing this message in the system log. Any thoughts or insight on these issues is greatly appreciated.

Thank you to all of you in advance for any ideas, let me know if you need any additional information about my settings, etc. to help understand more.

And apologies in advance if I posted this incorrectly or in the wrong place in this forum.

upload_2018-1-21_10-40-35.png


Thank you again.

Bill.
 
As far as devices on my network, I have about 60 devices, the majority of which are smart devices (Alexas and Wemo switches). I am running Merlin 380.69 firmware and the only thing jumping out at me is that Core #2 is often showing 100% and the System Log keeps showing the below error. I am not sure if this could cause this latency on my wireless, but I thought it was my NAS drive syncing, but after disabling that, I keep showing this message in the system log. Any thoughts or insight on these issues is greatly appreciated.
When you say "I keep showing this message in the system log" do you mean the messages are constant and never ending, or that you get a bunch of them for a few seconds and then no more for a long time? If the messages are continuous that could indicate that you router is being flooded with unwanted traffic. Try turning off devices one at a time until you locate the source.
 
When you say "I keep showing this message in the system log" do you mean the messages are constant and never ending, or that you get a bunch of them for a few seconds and then no more for a long time? If the messages are continuous that could indicate that you router is being flooded with unwanted traffic. Try turning off devices one at a time until you locate the source.

It is constantly appearing. Never seems to go away.
 
...

Thank you to all of you in advance for any ideas, let me know if you need any additional information about my settings, etc. to help understand more.

And apologies in advance if I posted this incorrectly or in the wrong place in this forum.

Thank you again.

Bill.

It sounds to me that the discussion a few posts above yours is the likely cause of the errors in your router log. You'll have to disable/turn off devices one-by-one until the culprit is found. Its possible that it could be multiple devices, so the best strategy may be to start with all devices turned off, and then turn them on one-at-a-time, checking the router log for each one. You could try turning them on in blocks of five as well. That may speed up the process.

As far as poor signal quality/range, I suggest you test your connection speed with all devices turned off except one computer of your choice. You may also want to try hopping onto the 5 GHz band because there is less noise up there, and you can run the 802.11AC protocol if your devices support it. Even though the 5 GHz band has shorter range, if there is reduced noise up there in combination with using 802.11AC, it may well be much faster than the 2.4 GHz band. That's the case for the far reaches of my house.
 
Bill, do you have a WiFi sniffer APP on your smart phone? That will let you check the signal strength around your house.
 
i know this is an old thread but this might be a upnp bug. did you guys manage to fix it? i am having this issue on rt-ax89x with cpu for 1 core pegged at 100%.
 
I am aware this is an old thread but it came up when I was looking for the cause of the same issue on my AC68U and I finally tracked it to a faulty WIFI enabled lightbulb. Was driving me potty.
 
I am aware this is an old thread but it came up when I was looking for the cause of the same issue on my AC68U and I finally tracked it to a faulty WIFI enabled lightbulb. Was driving me potty.
That's I never trust IoT devices including speakers.
 
Just for information, I was having this same issue with my RT-AX82U, but in my case the problem was that DMZ was enabled but the device was off from my network
 

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