You must change the route towards your destination.
A previous answer stated that the
-B options can be used, but normally, if the VPN is activated this does not work because it reroutes the traffic towards any destination through the VPN network interface - generally named
Therefore, you must reconfigure the route taken to reach your destination. Let us call it
<gate1> the IP address of the gateway (technically the address of the nexthop router) associated to the different interface that you want to use. With
route being deprecated, this should be:
ip route add <destination> via <gate1>
An alternative is
ip route add <destination> via <gate1> dev <different interface>
but given that the address
<gate1> is already associated with your different interface, here
<different interface>, that changes nothing.
What matters here, is to specify that this is
<gate1>, the gateway of your different interface, which has to be traversed, instead of that of the VPN.