how to attach umodem0 to something cu can use

Hi,

I'm trying to use the raspberry pi probe to access 
(from desktop amd64 15-stable) a rpi5.

The device is recognised on the desktop:

Apr 22 18:11:54 [7254924] ugen0.11: <Raspberry Pi Debug Probe (CMSIS-DAP)> at usbus0
Apr 22 18:11:54 [7254924] umodem0 on uhub6
Apr 22 18:11:54 [7254924] umodem0: <Raspberry Pi Debug Probe (CMSIS-DAP), class 0/0, rev 2.10/1.01, addr 27> on usbus0
Apr 22 18:11:54 [7254924] umodem0: data interface 2, has no CM over data, has no break

How can I tell cu to use it?

A usb<>ttl cable is seen like this:

Apr 22 19:32:38 [7259768] ugen0.11: <Prolific Technology Inc. USB-Serial Controller D> at usbus0
Apr 22 19:32:38 [7259768] uplcom0 on uhub6
Apr 22 19:32:38 [7259768] uplcom0: <Prolific Technology Inc. USB-Serial Controller D, class 0/0, rev 1.10/4.00, addr 28> on usbus0

I can access it via cu like this:

% cu -l cuaU0 -s 115200
Connected

How to do the same with the probe? Is it seen on cuaU0? I'm not seeing any
output.
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