Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f7/STM32F746/Ethernet_DMA/DMAMFBOCR#0x0
Ethernet DMA missed frame and buffer overflow counter register
MFC
OMFC
MFA
OFOC
https://github.com/modm-io/cmsis-svd-stm32