Hey Thomas, > I'm new to the mailing-list and want to intro myself. > > I'm working for a IT service-provider company as a product-manager for > managed services. I'm interested in Open Source and in OpenWRT as I'm > traveling and working from a camper van. Modemmanager is a great peace of > software, and the implementation on OpenWRT is a super-cool thing for the > OpenWRT community. >
Nice! Thanks for the kind words > Environment: > TP-Link TL-WR902AC v3 / OpenWrt 19.07.5 r11257-5090152ae3 / LuCI > openwrt-19.07 branch git-21.222.69112-b41f377 / Telkom Speedstick V / > Modemmanager Luci-proto manually integrated > Raspberry Pi B+ / OpenWrt 21.2.3 / Vodafone K6150 > > Now my questions: > > After connecting the bearer token has statement IPv4-Config / IPv6-Config > which includes the config-method (DHCP, static, ppp). I wonder who is setting > this. Is this coming from the device (4G stick) or is this setting provided > by the network-provider the device has registered into? The IP method to use, either static/dhcp/ppp, is selected by ModemManager in runtime, based on the device type and the ports it exposes. The network operator has nothing to do in this regard. > If you roam with the 4G stick you sometimes get IPv4 only, but in the > home-net you will get IPv4/IPv6 dualstack. Is it fair to say the network > (roaming access-provider) assigns the IP stack, regardless if your home apn > does support dualstack or not? I guess you can say that, yes. Different operators will have different settings for roaming users. > Is there in ModemManager a capability to pick a roaming network over the > other, so I could pick always best one? Is the signalquality a good > indication of good performing network? With ModemManager you can request to lock to a specific operator given its MCCMNC. E.g. you can run a 3GPP scan operation, get the list of available networks, and then manually lock to a specific one. There's no automatic way to do that by ModemManager itself; you could have a watcher/monitor custom process to do that selection, but just looking at signal quality may not be the best way. E.g. an LTE connection with low-medium quality is likely much better than a 3G connection with very high quality. -- Aleksander https://aleksander.es
