Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/ETH/ETH_MTLESTFSCR#0x0
EST Frame size Capture Register
Frame Size of HLBF
Queue Number of HLBF
https://github.com/modm-io/cmsis-svd-stm32