Making NetworkManager work with suspend/resume

Anybody who travels with a suspended laptop has likely run into the irritating problem of NetworkManager trying to reconnect to the old network - the one which was left behind before getting onto the airplane. It seems that Dan Williams has figured out the problem and queued a set of patches to fix it. "See, drivers timestamp wifi networks they know about. That way you can figure out if the network was last seen a second ago, 7 seconds ago, or so long ago that it’s dead to me. But they all use an kernel counter called ‘jiffies’ to do that. And ‘jiffies’ doesn’t increment across suspend/resume. See where I’m going with this?" Your editor plans to buy Dan a beer at the next opportunity.

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