I'm using a very bad wifi network, which causes iwm much sadness, but this particular error was new and unexpected.
Suddenly ping announces the network is down. ping: sendmsg: Network is down ping: wrote ox.tedunangst.com 64 chars, ret=-1 Sure enough, ifconfig says no network. And now comes the strange part. I run ifconfig scan and get an error. ifconfig: SIOCG80211ALLNODES: Network is down Maybe if I had run ifconfig down that would be sensible, but I didn't. My expectation is that if the interface is up, it will stay up, even if it disconnects from the network. The problem was resolved by running ifconfig up manually.
