Is there a way to verify if an established tunnel is actually working properly 
on the client side?
For instance, if I connect to an OpenVPN server (ncp-disable on server & 
client) using a different cipher on the client than on the server, the client 
will connect and print:
Initialization Sequence Completed

whereas the server prints:
client/IP:PORT Authenticate/Decrypt packet error: cipher final failed

due to the cipher mismatch.I could not find a way to verify the data channel on 
the client.
I've been experimenting with --ping and --ping-exit, but I couldn't really use 
those, as --ping-exit (or --inactive) would just terminate the OpenVPN process 
after the defined seconds, no matter what.
Suppose I don't have to the OpenVPN server config and can't rely on pinging the 
server's tunnel IP.
How can I confirm that the data channel is working correctly after 
"Initialization Sequence Completed" on the client?
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