RUTX11 speedtest fails with Connection to the speedtest server was lost

Running RUTX11 with RUTX_R_00.07.23.7 & EG06ELAR04A30M4G.

The unit has a swedish Tele2 SIM but is connected to a mobile network in Finland.

When starting speedtest is the test aborted with the message Connection to the speedtest server was lost.

A computer connected via wifi to rutx11 can run speed tests from speedtest.net.

The internet connection is working. Tested to ping 8.8.8.8 from the webui.