From 1848b0a5c2f555a432cadf3998a9a8e444eb8687 Mon Sep 17 00:00:00 2001
From: Jannes <Jannes.volkens@haw-hamburg.de>
Date: Wed, 26 Feb 2020 15:57:59 +0100
Subject: [PATCH] cpu/stm32_common/periph: Fix multicast filtering

---
 cpu/stm32_common/periph/eth.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cpu/stm32_common/periph/eth.c b/cpu/stm32_common/periph/eth.c
index dfe5b9739068..8043b136164a 100644
--- a/cpu/stm32_common/periph/eth.c
+++ b/cpu/stm32_common/periph/eth.c
@@ -211,6 +211,8 @@ int stm32_eth_init(void)
 
     /* pass all */
     //ETH->MACFFR |= ETH_MACFFR_RA;
+    /* pass on perfect filter match and pass all multicast address matches */
+    ETH->MACFFR |= ETH_MACFFR_PAM;
 
     /* store forward */
     ETH->DMAOMR |= (ETH_DMAOMR_RSF | ETH_DMAOMR_TSF | ETH_DMAOMR_OSF);