Hello
everyone,
I got the same problem last year when I
tried to use LWIP 1.1.0 stably. Finally, I found
the driver bug of net device in the low_level_input and
low_level_output function.
I suggest you to check your driver first. In
low_level_input function, you should check the packet
error and recover the device buffer pointer
after drop packet.
Also, in low_level_output function, you
should send the packet again when you can not get the send
success flag over a reasonable time.
This is my suggestion. I hope you will
get the trouble point.
Sincerely,