On Tue, 10 March 2015, at 6:16 pm, meino.cra...@gmx.de wrote: > ... > The problem vanishes as I powercycled my DSL modem. > > Was my DSL modem hacked?
I think it's far more likely the router ran out of memory, a process hung or something. Perhaps other sites worked because they were cached. There's no way to debug it now, and replies can only be speculation. If it becomes a regular problem, I suggest you install OpenWRT, which will give you the tools you need for debugging it. Stroller.