This has happened a few times so I setup a syslog server to capture the debug output for this Macbook's wireless connection.
After losing connectivity to the Internet, I looked at the logs and I'm seeing this:
2014-01-23 14:41:44 Local4.Warning 10.3.101.1 Jan 23 2014 14:41:44: %ASA-4-401002: Shun added: 10.3.101.191 0.0.0.0 0 0
And then a little further down:
2014-01-23 14:41:44 Local4.Warning 10.3.101.1 Jan 23 2014 14:41:44: %ASA-4-733102: Threat-detection adds host 10.3.101.191 to shun list
I've never had this issue before until now...I have another Mac on the network as well but haven't had any issues with it being added to the shun list. Any help on this is appreciated. Should I modify my threat detection parameters? Any chance there may be some malicious software on the Mac OSX?