@Dub Bartolec​ Yeah, What a joke, when I upgrade to cubemx 6.0.1, it can't work, OMG, unbelievable, then I have to downgrade to cubemx 5.4.

@Dub Bartolec​  the problem is still there, be careful

@Houda GHABRI​ hi，this​ problem is still there in stm32cubemx 6.0.1。 the irq priority is still set to 0 instead of 5. and what is worse is that in the stm32cubemx 6.0.1 , I create a new project using freertos + lwip to achieve "ping" is not working...