Top VPN providers offer IPv6 leak protection implemented in their applications, but it is safer to disable IPv6 from your machine. The problem is that, if your network supports IPv6 and the VPN server you are connected to works over IPv4, then your IPv6 traffic may leak. Consequently, most VPN services do not support IPv6 VPN tunnels. Thus, many Internet services (data centers, Internet Service Providers) still use IPv4 and do not assign public IPv6 addresses. However, the complete transition to IPv6 addresses is far from complete. This was necessary as the available IPv4 addresses were running out. The Internet Protocol Version 6 ( IPv6) was designed to replace IPv4 to allow more unique IP address identifiers to be created.
Alternative solution: disable IPv6 on your router. Shut down the Mac and restart it, then let it sit for 15 minutes. After a short amount of time, the disc may eject itself. This will trigger the system to eject your disc before macOS begins loading. Hold the button down until the desktop appears. Hold down your trackpad button (or your left mouse button) and restart your Mac. To restart the computer, enter “reboot” at the prompt without the quotation marks. At the prompt enter /usr/bin/drutil eject. If all else fails, you can try these methods: Launch the terminal app and use the following command and then press enter:. 
Next, try this method to force eject a disc:
Right-click on the disc icon and select eject. Drag the disc icon to your Mac’s trash bin. Fortunately, there are some simple steps that can be taken to force eject a disc that’s stuck. You might also have an external solution with a CD/DVD/Blu-ray drive.Īt some point, there’s a chance that a CD, DVD, or Blu-ray disc is going to get stuck in your Mac or external optical drive. Though Apple slowly phased out optical drives from its Mac lineup over the years, you might still have a MacBook or desktop Mac with a disc drive.
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