The RUT240 (and probably other Teltonika devices as well, using the same software) seems to have serious startup reliability issues, especially when used with the Netgear WN1000RP wifi extender, possibly any other routers as well. I move both devices frequently between two locations. The issues are:
a) Frequently when plugging the RUT240 into the wall, the WLAN will not show up at all (the lights are showing mobile connection), irrespective of whether the wifi extender is plugged in. A few plugging in attempts may be needed.
b) When the wifi extender is connected to the wall before or shortly after the RUT240, the internet won't work. There is mobile connection according to the lights on the RUT240, but on devices connected to it, there is no internet. Often the WLAN also drops out. Sometimes a blank “hotspot” login page is displayed when connecting, which is seemingly trying to reload itself all the time. I think this is the admin page of the extender loading itself in a loop—but why would that show up from the RUT240 network at all? DNS requests with the command line `host` program give local 192.168.1.x addresses for remote hosts! My guess is that the RUT240 has started to use and forward dummy DHCP/DNS servers on the extender (not connected to internet as the RUT240 was not ready), but why would it do that, and is there any way to disable such behaviour?
