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After Lion upgrade, having network issues after wake from sleep

After upgrading to Lion from 10.6.8 on my MacBook Pro (15-inch, Early 2011), I am unable to connect to the Internet after the computer wakes from sleep. I should rephrase this - I am able to ping IP's and DNS (DNS servers are present) however none of my apps will connect (Safari, iChat, etc) -> they all indicate the Internet is unavailable. I have two Airport Express's running 7.5.2 extending a WiFi network off an Airport Extreme running 7.5.2. This issue is specific to waking from sleep. Any thoughts or suggestions would be appriciated.

Mac OS X (10.7)

Posted on Jul 20, 2011 8:31 PM

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213 replies

Jul 22, 2011 12:05 AM in response to Slicecom

It's definitely linked to Time Machine and backups.


I think If I put my machine to sleep/close the lid and Time Machine happens to be performing a backup, when I open the lid again, the network connection is lost and I receive a bunch of errors about the backup disk being unavailable.


This means that if my mbp isn't in the middle of a backup when I put it to sleep, wifi comes back up without a problem.

Jul 23, 2011 7:41 AM in response to philjackson

Yesterday I was able to fix the issue by making a change to my network settings (late 2009 i7 iMac w/ manual IP on ethernet), I simply changed IPv6 settings and saved, and magically my interwebz were accessible to apps other than terminal.


Today I had to log out my account and log back in to resolve, as changing network settings didn't seem to help.

After Lion upgrade, having network issues after wake from sleep

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