UCSD VPN after Upgrading to Big Sur

After upgrading to Big Sur (macOS 11), the following errors may come up after a reboot: 

In Big Sur, with version 4.9.00086 installed, run this command to uninstall: 

sudo /opt/cisco/anyconnect/bin/vpn_uninstall.sh

After the uninstallation process completes and the computer reboots, the Cisco System Extension error no longer appears. 

Download the latest VPN client from Blink, currently 4.9.05042, and install. https://blink.ucsd.edu/technology/network/connections/off-campus/VPN/mac6.html 
NOTE: For Big Sur, the minimum version is 4.9.04xxx.

The following notification will appear following a successful installation:

This a new dialog box from Apple's new privacy disclosure policy in Big Sur. Although there is a "Don't Allow" button your VPN will not work properly if you do not click "Allow". It's Apple's way to inform that UCSD, our VPN service provider, can still monitor you, which is no different than the previous versions of the VPN client.