It then works for 1.5 to 2 days until it looses its DHCPv4 lease for WWAN_4 and even though Luci still displays addresses for IPv6 and IPv6-PD on the WWAN parent interface, there is no connectivity. If I manually restart the interface it works again. [Edit: This time around resetting the interface via Luci didn't work, rebooting the router did]
The only thing I find in the logs is udhcp failing to renew it's lease, nothing else regarding WWAN, qmi or cdc-wdm...uqmi --get-current-settings says "Out of call", but --get-signal-info displays a LTE signal...
I'm at a loss here, can somebody point me in the right direction?
Thanks, but that seems to be slightly different in that my interface does not go down, at least it's not logged. The only thing I see is udhcp: renewing nicely every hour, trying to renew but failing, trying to discover but failing, giving up. I also know that German providers like to disconnect consumers, but usually they are very punctual about it, like every 24h. Which also doesn't match what I'm seeing.
Anyways: if there are re-connection issues with openWrt, how would one go about to "take care about re-connect"? I see that uqmi has an --autoconnect option for --start-network and there's also a --set-autoconnect enabled parameter but this doesn't result in any changes to the config (that I found)??
Sorry @AndrewZ, but that was really a waste of my time. This ROOter-thing won't even connect. And what's worse, it somehow managed to lock my SIM card which I can't seem to PUK-unlock on the device itself. I assume that the OS, in an overzealous attempt to do everything automatically, tried to connect without a PIN one-too-many times, using the automatically detected modem, the existing WWAN interface and an empty default profile? That's kinda annoying, given I have to open up my router to change the SIM...
And even if it had worked, I highly doubt I would have stuck with it. With OpenWrt I was slightly annoyed that it came with dnsmasq enabled by default (I already have a couple of DNS / DHCP servers). Can you image how I felt about ROOter? 10 network interfaces? 11 services? Load-balancing? 1/3 less free flash? Just not my style...
@dpeti It was still running the previous version of OpenWrt 19.x on the router. An upgrade to 20.x (I think, not sure) fixed it for a couple of weeks, but then the router wouldn't connect at all. I assume that's most likely a hardware issue with the cheap Chinese router, since I got no replies at all from the WWAN card. For me, it was just not worth the time and effort, so I abandoned this project.