Got into it when tried to leverage static (visible from Internet) IP setup. It requires different APN, and the only one was edited. The device connects fine but not really - nothing work including ping.

Same setup working fine from DUN tether on the same device. So it seems there is overlook in connectivity layer. And that part seems to be closed unfortunately, to have some dig.

Anybody seeing similar stuff? Bug https://bugs.maemo.org/show_bug.cgi?id=8553 entered to track this issue out.