Hey guys, I'm using lwip 1.4 on ThreadX with a usb ethernet dongle, I am using a netio program (a RAW API TCP program) for verifying throughput. However, I found that if I plug out the ethernet dongle while netio processing, the PCB kept in active pcb states even I called tcp_close. I want to make tcp_close once the dongle is plugged out, and create a new PCB for processing tcp connection, but the old pcb is not released which cause my new PCB always bind failed. Do any idea? thank you.
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