Posted: Sat May 23, 2020 3:23 Post subject: Anyone else get early morning drop outs?
Since roughly the time I started using DD-WRT, which is approximately a year ago, my Internet (wired and wireless, on all devices) goes down for some ten seconds most nights, at between midnight and 4pm (U.K. time).
Unfortunately I cannot quite remmeber when I started using DD-WRT, which is one reason why I am unsure whether DD-WRT is to blame or my Internet provider is.
My Internet provider is moderately useless, but I got it to run a variety of tests and they did not find anything.
My ISP is Plusnet. My router is an Asus RT-AC66U. I use this firmware: DD-WRT v3.0-r42278 giga (02/05/20) (though I've run older builds within the last year; newer builds do not, yet, work). I have no other problem with that firmware - everything runs well. I use the router in the normal way (i.e. as - if this the right term - an access point). I have a VPN (running in software, not on the router) but I have the connectivity drop even when the VPN is off.
Since the drop is so brief, I can live with it, but it does irritate. _________________ My router: Asus RT-AC66U
Operating systems on devices that I use with that router: GNU-Linux; Windows 10; Android 13
Have you posted in the right thread? That is: why post that link here? EDIT: ah, that build contains a fix for this bug, a bug that causes a disconnection every twelve hours? _________________ My router: Asus RT-AC66U
Operating systems on devices that I use with that router: GNU-Linux; Windows 10; Android 13
Joined: 08 May 2018 Posts: 14220 Location: Texas, USA
Posted: Sat May 23, 2020 7:58 Post subject:
The issue seemed to be specific to the WRT54* devices and non-standard WAN lease times (at least nobody else was reporting an issue). Perhaps your ISP was doing the same voodoo to you? _________________ "Life is but a fleeting moment, a vapor that vanishes quickly; All is vanity"
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I did some web searching to try to determine whether my router Asus RT-AC66U has the WRT54 thing and the results seem to indicate that it does not. Is that right?
As to 'non-standard WAN lease times': I would have to check whether I have set such a thing. _________________ My router: Asus RT-AC66U
Operating systems on devices that I use with that router: GNU-Linux; Windows 10; Android 13
Ah yes - I should have mentioned that. The router log seems to say nothing that is any help. On the 'syslog' of my Linux laptop, which uses router wirelessly, there is a message - I am afraid I forget exactly what it is (and I don't have the laptop to have now) - about a reconnect, or disconnect, being initiated. I can hunt down the exact message if anyone thinks they might be able to offer a diagnosis on its basis.
EDIT: I can't find my old records, and I have not yet observed the problem again (I tend to notice only when streaming Netflix, for, Netflix gives me a pop-up about the problem; at other times, the disconnection tends to be too brief to be noticable). However, I think that the relevant system log entry that I get, on my Linux laptop, is ctrl event disconnected reason= but I cannot at present recall the reason number.
Also, I've tried the latest build for the router (the firmware file being dd-wrt-43217-Asus_RT-AC66U) and, with that version of the firmware installed, I cannot connect to the Internet (as I have reported in that thread) or even ping 8.8.8.8, though I do seem to get assigned an IP address. _________________ My router: Asus RT-AC66U
Operating systems on devices that I use with that router: GNU-Linux; Windows 10; Android 13
Last edited by WouldRatherBeFOSS on Mon May 25, 2020 1:31; edited 1 time in total
Router mode: er, I think 'Gateway' - is that the mode where you just use the router in the standard way, i.e. not as a repeater or anything like that?
Also: I've updated my original post to say that on Linux I see this in my syslog when I get a disconnection: ctrl event disconnected reason=. _________________ My router: Asus RT-AC66U
Operating systems on devices that I use with that router: GNU-Linux; Windows 10; Android 13
Joined: 08 May 2018 Posts: 14220 Location: Texas, USA
Posted: Mon May 25, 2020 2:15 Post subject:
From my comment in the build thread:
kernel-panic69 wrote:
WouldRatherBeFOSS wrote:
@kernel-panic69
The router is not connected to any other router or doing anything fancy. So, does this mean I am using 'gateway' mode?
What I was referring to is on the Setup->Advanced Routing tab in the webUI. Default is "gateway", but you can change that to other settings. Usually, a wired AP setup is to a LAN port, and the setting is set to "router" on that page.
Right. I can confirm that my router is in 'gateway' mode.
So: might the problem that I have with the new firmware build - firmware that might solve the dropout problem - owe to 'NAT' ('Network Address Translation') being misconfigured? Or is NAT used only by routers that are not in gateway mode?
If NAT might indeed be my problem, then how so, please? I have looked through the router's GUI, and found a section entitled NAT /QoS, but I cannot see any specific setting that looks relevant. _________________ My router: Asus RT-AC66U
Operating systems on devices that I use with that router: GNU-Linux; Windows 10; Android 13
I do not use my ISP's DNS server. Instead I use my VPN's server. When, with the new build, I could not access the Internet, I think that, temporarily, I changed the DNS server. I think, though, that I changed the DNS to Google or perhaps to OpenDNS. I could try re-flashing the build, having set the DNS to my ISP's server. Hold on, though: if it does prove that one must use one's ISP's DNS - is that not just a bug?
'You can still ping from the router console and not from a client when NAT is off.' I do not understand. I was testing the new build by trying to ping - from a command window, on Windows 10. I was not trying, but if necessary I could try, to ping when SSHd into the router. I do think I have 'NAT' disabled. _________________ My router: Asus RT-AC66U
Operating systems on devices that I use with that router: GNU-Linux; Windows 10; Android 13
I have just tried the build again (and updated my post in the build thread). Let me repeat material from that updated post, as follows.
Router syslog is here. I note also the following. Changing DNS server, and toggling DNSMasq, did not help. Oddly, though, a few elements on some websites would load, and, the various times I tried to ping 8.8.8.8, all packets were lost except for one time when half the packets got through. _________________ My router: Asus RT-AC66U
Operating systems on devices that I use with that router: GNU-Linux; Windows 10; Android 13
