Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f4/STM32F405/Ethernet_MAC/MACFFR#0x0
Ethernet MAC frame filter register
PM
HU
HM
DAIF
RAM
BFD
PCF
SAIF
SAF
HPF
RA
https://github.com/modm-io/cmsis-svd-stm32