Trying to debug with two st link V2 at the same time, I started the first and then tried to start the second. Firstly I had to select the correct serial number for the second ST link but then I got the error:
Failed to bind to port 61234, error code -1: No error
Failure starting GDB server: TCP port 61234 not available.
Here is the output:
STMicroelectronics ST-LINK GDB server. Version 5.5.0
Copyright (c) 2019, STMicroelectronics. All rights reserved.
Starting server with the following options:
Persistent Mode : Disabled
Logging Level : 1
Listen Port Number : 61234
Status Refresh Delay : 15s
Verbose Mode : Disabled
SWD Debug : Enabled
InitWhile : Enabled
Failed to bind to port 61234, error code -1: No error
Failure starting GDB server: TCP port 61234 not available.
