When I close the lid of my PowerBook, my app runs every hour for about a 
minute. This probably is the DarkWake as mentioned in WWDC 2012 "Power 
Management". 
There it was also stated that while in DarkWake the Network is available.

But often (not always) my app (while in DarkWake) gets:
Error getaddrinfo(time.apple.com, ntp) -> nodename nor servname provided, or 
not known

While awake, there is never (or rarely) a problem with getaddrinfo.

Is there anything special I have to do to be able to access the network while 
sleeping darkly?

Is there any info available other than the WWDC talks?

Gerriet.

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