Is firewall history dissapearing normal?

Hello all and thanks in advance for the help.

 

I am getting constant Ip6 ips showing up on my firewall security logs. I know this is said to be a normal process, but it happening as often as it does was alarming to me. Heres an example of what happens

 

8/7/2014 10:32:32 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).",Detected,No Action Required,Firewall - Network and Connections,
8/7/2014 10:32:32 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: fe80::83c:2efa:bbad:a66d%5).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:30:20 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:30:20 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: fe80::83c:2efa:bbad:a66d%5).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:29:18 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:29:17 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: fe80::83c:2efa:bbad:a66d%5).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:27:54 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:27:54 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: fe80::83c:2efa:bbad:a66d%5).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:26:51 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:26:51 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: fe80::83c:2efa:bbad:a66d%5).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:26:51 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: fe80::ffff:ffff:fffe%5).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:25:38 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: fe80::ffff:ffff:fffe%5).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:25:38 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:25:38 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: fe80::83c:2efa:bbad:a66d%5).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:24:35 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:24:35 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: fe80::83c:2efa:bbad:a66d%5).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:24:35 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: fe80::ffff:ffff:fffe%5).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:23:33 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: fe80::ffff:ffff:fffe%5).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:23:33 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: fe80::83c:2efa:bbad:a66d%5).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:23:33 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:22:31 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:22:31 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: fe80::83c:2efa:bbad:a66d%5).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:22:30 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: fe80::ffff:ffff:fffe%5).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:21:48 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: fe80::ffff:ffff:fffe%5).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:21:48 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:21:48 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: fe80::83c:2efa:bbad:a66d%5).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:20:45 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:20:45 AM,Info,"Protecting your connection to a newly detected network on adapter \"Teredo Tunneling Pseudo-Interface\" (IP address: fe80::83c:2efa:bbad:a66d%5).",Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:20:29 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: 2001::9d38:6abd:83c:2efa:bbad:a66d).,Detected,No Action Required,Firewall - Network and Connections,,,
8/7/2014 10:20:29 AM,Info,IP address has disappeared from adapter Teredo Tunneling Pseudo-Interface (IP address: fe80::83c:2efa:bbad:a66d%5).,Detected,No Action Required,Firewall - Network and Connections,,,

 

All throughout the day and multiple times a minute seems to be suspicious. to me. Now, when i emailed comcast about this, all of a sudden the firewall logs dissapeared. And now the logs dissapear everyday, sometimes twice a day as if they are being deleted. All other logs remain but the firewall connections log. Is this some self truncation of logs that Norton does or am I being hacked/monitored, disguising the ip through ip6? I have had a history with a someone in the past who was able to get into my facebook, so no this would not be random.