I am now owning 4 USB internet sticks in the meantime. For the latest
2 (one T-Mobile stick from Germany and one - also T-Mobile - from
Austria) I did not have to enter any manual DNS - it worked without
problems already many times.
For the german one I only had to upgrade the usb-modeswitch package to
1.1.4-1 - not sure if that matters.
I am now owning 4 USB internet sticks in the meantime. For the latest
2 (one T-Mobile stick from Germany and one - also T-Mobile - from
Austria) I did not have to enter any manual DNS - it worked without
problems already many times.
For the german one I only had to upgrade the usb-modeswitch package to
1.1.4-1 - not sure if that matters.