How to cancel local port forward from ssh console

with more recent versions of (open)ssh, there's an escape command to cancel local forwards as well:

ssh> help
Commands:
      -L[bind_address:]port:host:hostport    Request local forward
      -R[bind_address:]port:host:hostport    Request remote forward
      -D[bind_address:]port                  Request dynamic forward
      -KL[bind_address:]port                 Cancel local forward
      -KR[bind_address:]port                 Cancel remote forward
      -KD[bind_address:]port                 Cancel dynamic forward

There's no simple way to do it on the command-line.

You can find the PID:

$ ps x | grep ssh
 1234 ?        Ss     0:00 ssh -f -N -L 8080:localhost:8080 remotehost

And then kill the process:

$ kill 1234