diff --git a/ports/stm32/lwip_inc/lwipopts.h b/ports/stm32/lwip_inc/lwipopts.h
index 7b2460fa80..f641cf515a 100644
--- a/ports/stm32/lwip_inc/lwipopts.h
+++ b/ports/stm32/lwip_inc/lwipopts.h
@@ -24,6 +24,9 @@
 #define LWIP_NETIF_HOSTNAME             1
 #define LWIP_NETIF_EXT_STATUS_CALLBACK  1
 
+#define LWIP_LOOPIF_MULTICAST           1
+#define LWIP_LOOPBACK_MAX_PBUFS         8
+
 #define LWIP_IPV6                       0
 #define LWIP_DHCP                       1
 #define LWIP_DHCP_CHECK_LINK_UP         1
diff --git a/ports/stm32/mpnetworkport.c b/ports/stm32/mpnetworkport.c
index 62f780a35a..3b9591213a 100644
--- a/ports/stm32/mpnetworkport.c
+++ b/ports/stm32/mpnetworkport.c
@@ -72,6 +72,10 @@ STATIC void pyb_lwip_poll(void) {
 
     // Run the lwIP internal updates
     sys_check_timeouts();
+
+    #if LWIP_NETIF_LOOPBACK
+    netif_poll_all();
+    #endif
 }
 
 void mod_network_lwip_poll_wrapper(uint32_t ticks_ms) {