Collect logs for [[AppleCare]]: - On the affected machine: - Install both profiles provided (MegaWiFI and NetworkDiagnostic) - Reboot the device - Start a [[network trace using tcpdump]] or Wireshark - On an other device sitting near the affected machine: - Click on the Wi-Fi icon in the menu bar while pressing the option key - Select “Open Wireless Diagnostics” - From the “Window” menu select “Sniffer” - Select settings that apply and hit “Start” - On the affected machine: - Follow the steps given in the pdf attached to enable WiFi logging and capture - Enabling Logging - Using the Wi-Fi menu: - Option click on the Wi-Fi menu icon at the top right corner of the menu bar. - Select ‘Enable Wi-Fi Logging’. - Reproduce the Wi-Fi issue. - Choose Create Diagnostics Report. - Wait for the Wi-Fi Diagnostics report to finish (this may take as much as ten minutes). - When the Diagnostic is complete, a Finder window with the path /var/tmp should appear in the Finder. - Within this folder, you should see a file that is named similar to the example below but with a current date and time stamp: WirelessDiagnostics_XXXXXXXXXXXX_YYYY-MM-DD_HH.MM.SS.tar.gz - Attach the WirelessDiagnostics file to your report. - Note: If you don’t see the /var/tmp folder appear in the Finder after 10 minutes, click the Finder’s Go menu and select [[Go to Folder]]…. Then enter "/var/tmp” without the quotes into the text area that appears, followed by the enter key. The Finder window should open. - Stop the network trace - On the other device:  - Stop the sniffer trace on the monitoring machine. The captured pcap will be located in /var/tmp which you can access from the Finder ( Go > Go to Folder…).