Oops, I spoke too soon. I did get an output line after a bunch of minutes: Received 50 buffers: 66.8 Kb (avg 1.3 Kb) in 101.00 Sec ( 0.6Kb/Sec)So maybe it's going very very slowly?
Okay. I just didn't way long enough. Remove CONFIG_SIM_WALLTIME=y from your configuration and it should go a lot faster (maybe too fast).
OR maybe there really is some kind of timing issue. After all, you did claim that the problems started with the removal of CONFIG_TIME_EXTENDED.