I am configuring the following control registers. heth->Instance->MACCR |= ETH_MACCR_IPC; // INVERSE MATCHING heth->Instance->MACPFR |= ETH_MACPFR_IPFE; heth->Instance->MACL3L4C0R |= 1<<21;//ETH_MACL3L4C0R_L4DPIM0; heth->Instance->MACL3L4C0R |= 1<<2...