If you have network interfaces running that are not wished or which could block other network services (like a VPN connection), you can remove them by using ifconfig.
The currently running netwro interfaces can be displayed by executing the following command without options in a shell:
ifconfig
The following script removes automatically some of the network interfaces when executed:
for i in `ifconfig | grep "br-*" | cut -d " " -f1 | grep "br-*"`; do sudo ifconfig $i down; done
The script greps all lines where the network name starts with “br-*“. The * is a wildcard which extracts all names starting with br- and any additional characters.
The lines are split into columns, the names are extracted and shutdown via “ifconfig NAME down“.
To use this script you could store the line into a “stop-network-interfaces.sh” file and store to you bin directory.