added fix for https://github.com/embassy-rs/embassy/issues/2496 in the v1 driver

embassy-stm32/src/eth/v1/mod.rs

@@ -163,6 +163,11 @@ impl<'d, T: Instance, P: PHY> Ethernet<'d, T, P> {
                                       // TODO: Carrier sense ? ECRSFD
         });
 
+        // Set the mac to pass all multicast packets 
+        mac.macffr().modify(|w| {
+            w.set_pam(true);
+        });
+
         // Note: Writing to LR triggers synchronisation of both LR and HR into the MAC core,
         // so the LR write must happen after the HR write.
         mac.maca0hr()