Here is my problem. Several months ago I changed my ISP (Vodafone Germany) plan to 1Gbit using a Vodafone Station 6 as Modem/Router. By the time I used a R7800 with Openwrt 22.03 as Wifi router and the VF station in bridge mode as modem. This setup caused regular internet drops and disconnects. As I thought that is was caused by outdated or defect hardware, the VF station was replaced and I replaced the R7800 by a new RT3200 running 23.05 Snapshot (1 or 2 weeks ago). Issue remain. Every 12-24h internet became really slow before the connection completely dropped out.
I disconnected the RT3200 and used the VF Station as Wifi router. Now everything runs stable for several days.
Today I reconnected LAN1 of the VF station to the Internet port of RT3200. I didn't switch the VF station to bridge mode and ensured that all WiFi connections were still running via VF station. After about 12h the internet connection dropped again.
Does anyone have an idea how to solve this issue or what I can do to find the problem?
Hi, this is my log. Strage is, that currently I can ping via Diagnostics in Openwrt, but my Laptop (via Wifi) does get Wifi access to Openwrt but not to the internet.
Info: Last dropout was Aug 1 between sometime in between 8-10pm. After shutdown of the RT3200 and reboot of the VF station (and using it as router again) it worked again.
BusyBox v1.36.1 (2023-07-21 18:28:13 UTC) built-in shell (ash)
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| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
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OpenWrt SNAPSHOT, r23597-f0445746f6
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root@OpenWrt:~# logread -e udhcpc
Tue Aug 1 10:08:35 2023 daemon.notice netifd: wan (2370): udhcpc: started, v1.36.1
Tue Aug 1 10:08:35 2023 daemon.notice netifd: wan (2370): udhcpc: broadcasting discover
Tue Aug 1 10:08:35 2023 daemon.notice netifd: wan (2370): udhcpc: broadcasting select for 149.xxx.xxx.xxx, server 81.xxx.xxx.xxx
Tue Aug 1 10:08:35 2023 daemon.notice netifd: wan (2370): udhcpc: lease of 149.xxx.xxx.xxx obtained from 81.xxx.xxx.xxx, lease time 5400
Wed Aug 2 08:17:18 2023 daemon.notice netifd: wan (2370): udhcpc: received SIGTERM
Wed Aug 2 08:17:18 2023 daemon.notice netifd: wan (2370): udhcpc: unicasting a release of 149.xxx.xxx.xxx to 81.xxx.xxx.xxx
Wed Aug 2 08:17:18 2023 daemon.notice netifd: wan (2370): udhcpc: sending release
Wed Aug 2 08:17:18 2023 daemon.notice netifd: wan (2370): udhcpc: entering released state
Wed Aug 2 08:17:23 2023 daemon.notice netifd: wan (6453): udhcpc: started, v1.36.1
Wed Aug 2 08:17:23 2023 daemon.notice netifd: wan (6453): udhcpc: broadcasting discover
Wed Aug 2 08:17:27 2023 daemon.notice netifd: wan (6453): udhcpc: broadcasting discover
Wed Aug 2 08:17:30 2023 daemon.notice netifd: wan (6453): udhcpc: broadcasting discover
Wed Aug 2 08:17:51 2023 daemon.notice netifd: wan (6453): udhcpc: received SIGTERM
Wed Aug 2 08:17:51 2023 daemon.notice netifd: wan (6453): udhcpc: entering released state
Wed Aug 2 08:18:09 2023 daemon.notice netifd: wan (6712): udhcpc: started, v1.36.1
Wed Aug 2 08:18:09 2023 daemon.notice netifd: wan (6712): udhcpc: broadcasting discover
Wed Aug 2 08:18:12 2023 daemon.notice netifd: wan (6712): udhcpc: broadcasting discover
Wed Aug 2 08:18:15 2023 daemon.notice netifd: wan (6712): udhcpc: broadcasting discover
Wed Aug 2 08:18:31 2023 daemon.notice netifd: wan (6712): udhcpc: received SIGTERM
Wed Aug 2 08:18:31 2023 daemon.notice netifd: wan (6712): udhcpc: entering released state
Wed Aug 2 08:20:23 2023 daemon.notice netifd: wan (6977): udhcpc: started, v1.36.1
Wed Aug 2 08:20:23 2023 daemon.notice netifd: wan (6977): udhcpc: broadcasting discover
Wed Aug 2 08:20:24 2023 daemon.notice netifd: wan (6977): udhcpc: broadcasting select for 149.xxx.xxx.xxx, server 81.xxx.xxx.xxx
Wed Aug 2 08:20:24 2023 daemon.notice netifd: wan (6977): udhcpc: lease of 149.xxx.xxx.xxx obtained from 81.xxx.xxx.xxx, lease time 5400
So your ISP is providing a DHCP lease time of 90 minutes. It looks like it expired at 8:17 and then didn't get a new one until 8:20. It seems likely that this is the cause of your problem.
The real question is if the internet connectivity recovered at 8:20 after the DHCP lease request succeeded?
Hi, thanks for the answer. Could that also be cause bei reboots? Because to get everything working, I needed to reboot the modem and the OpenWRT router.
I can do the same exercise and write done the times when I did what and post the log again
I can use the OpenWRT setup until the disconnect and post the log again
First experiment will be to see if the internet recovers on its own a few minutes after the outage. If you can wait 5 mins or so, that would be a datapoint. Check the logs.
If it doesn’t recover, you could try restarting the wan interface. Does that fix the problem?
If not, try physically disconnecting the Ethernet cable to the modem and then reconnecting it. Any change?
Let’s go with these tests first (you can stop at the first one that works and we’ll discuss).