Internet over PPPoE is lose connection when starting Teamviewer on mac book

[streetsfinest]

Hello,

i´ve got a problem with teamviewer, a macbook and a pfsense PPPoE Connection.
When i start the teamviewer connection and paste the password for the teamviewer session, the session is down and the internet connection too.
I must reboot the dsl modem from my isp to get connection again. That happend only with the macbook. Works fine with other windows pc´s.
Befor i use the pfsense, it still works fine.
The firewall rules are the default with full access.

What i done till yet:

• Stopping the squid service –> Issue
• configure the mtu size of my wan connection (default 1500 now 1492) ---> Issue
• test with other clients (windows. ---> work fine)
• test macbook over wlan and cable ---> Issue

The Connection brake only when starting Teamviewer, normal tasks at the internet and so on are still working fine.

Does anybody have a idea to solve this problem?