After finding this post https://forums.freertos.org/t/where-can-i-find-the-example-project-freertos-plus-tcp-for-stm32f4xxx/10579/9 I also realised I hadn’t enabled the ETH Interrupt.
After finding this post https://forums.freertos.org/t/where-can-i-find-the-example-project-freertos-plus-tcp-for-stm32f4xxx/10579/9 I also realised I hadn’t enabled the ETH Interrupt.