Well, have to correct myself. Checking of the “restart on NIC changes” setting doesn’t solve anything. What really solves the issue is switching off the second interfering service upnp_nas. Unfortunately it is not as easy as removing it from autostart via “update-rc.d -f unpn_nas remove”, because some WD-introduced black magic (in /usr/local/sbin) does always readd it after system start… So one has to stop that thing every time manually after a reboot of the MBLD. Or find the script where it is readded to autostart and clear it.
Anyway, as far as the smp is concerned, it is clear that it overreacts to interfering DLNA services (don’t know the exact problem though). I hope that there will be a firmware update soon which fixes that. Other DLNA clients are obviously not disturbed that much.
