diff --git a/arch/arm/src/c5471/c5471_ethernet.c b/arch/arm/src/c5471/c5471_ethernet.c
index 25fa3cba12d..fe18a9ace74 100644
--- a/arch/arm/src/c5471/c5471_ethernet.c
+++ b/arch/arm/src/c5471/c5471_ethernet.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/arm/src/c5471/c5471_ethernet.c
  *
- *   Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2009-2010 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Based one a C5471 Linux driver and released under this BSD license with
@@ -394,6 +394,10 @@ static void c5471_txtimeout(int argc, uint32_t arg, ...);
 static int c5471_ifup(struct uip_driver_s *dev);
 static int c5471_ifdown(struct uip_driver_s *dev);
 static int c5471_txavail(struct uip_driver_s *dev);
+#ifdef CONFIG_NET_IGMP
+static int c5471_addmac(struct uip_driver_s *dev, FAR const uint8_t *mac);
+static int c5471_rmmac(struct uip_driver_s *dev, FAR const uint8_t *mac);
+#endif
 
 /* Initialization functions */
 
@@ -1734,6 +1738,66 @@ static int c5471_txavail(struct uip_driver_s *dev)
   return OK;
 }
 
+/****************************************************************************
+ * Function: c5471_addmac
+ *
+ * Description:
+ *   NuttX Callback: Add the specified MAC address to the hardware multicast
+ *   address filtering
+ *
+ * Parameters:
+ *   dev  - Reference to the NuttX driver state structure
+ *   mac  - The MAC address to be added 
+ *
+ * Returned Value:
+ *   None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_NET_IGMP
+static int c5471_addmac(struct uip_driver_s *dev, FAR const uint8_t *mac)
+{
+  FAR struct c5471_driver_s *priv = (FAR struct c5471_driver_s *)dev->d_private;
+
+  /* Add the MAC address to the hardware multicast routing table */
+
+#warning "Multicast MAC support not implemented"
+  return OK;
+}
+#endif
+
+/****************************************************************************
+ * Function: c5471_rmmac
+ *
+ * Description:
+ *   NuttX Callback: Remove the specified MAC address from the hardware multicast
+ *   address filtering
+ *
+ * Parameters:
+ *   dev  - Reference to the NuttX driver state structure
+ *   mac  - The MAC address to be removed 
+ *
+ * Returned Value:
+ *   None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_NET_IGMP
+static int c5471_rmmac(struct uip_driver_s *dev, FAR const uint8_t *mac)
+{
+  FAR struct c5471_driver_s *priv = (FAR struct c5471_driver_s *)dev->d_private;
+
+  /* Add the MAC address to the hardware multicast routing table */
+
+#warning "Multicast MAC support not implemented"
+  return OK;
+}
+#endif
+
 /****************************************************************************
  * Name: c5471_eimreset
  *
@@ -2094,7 +2158,11 @@ void up_netinitialize(void)
   g_c5471[0].c_dev.d_ifup    = c5471_ifup;     /* I/F down callback */
   g_c5471[0].c_dev.d_ifdown  = c5471_ifdown;   /* I/F up (new IP address) callback */
   g_c5471[0].c_dev.d_txavail = c5471_txavail;  /* New TX data callback */
-  g_c5471[0].c_dev.d_private = (void*)g_c5471; /* Used to recover private state from dev */
+ #ifdef CONFIG_NET_IGMP
+  g_c5471[0].c_dev.d_addmac  = c5471_addmac;   /* Add multicast MAC address */
+  g_c5471[0].c_dev.d_rmmac   = c5471_rmmac;    /* Remove multicast MAC address */
+#endif
+ g_c5471[0].c_dev.d_private = (void*)g_c5471; /* Used to recover private state from dev */
 
   /* Create a watchdog for timing polling for and timing of transmisstions */
 
diff --git a/arch/arm/src/lm3s/lm3s_ethernet.c b/arch/arm/src/lm3s/lm3s_ethernet.c
index 8751a8537b8..1dee89e79e6 100644
--- a/arch/arm/src/lm3s/lm3s_ethernet.c
+++ b/arch/arm/src/lm3s/lm3s_ethernet.c
@@ -254,6 +254,10 @@ static void lm3s_txtimeout(int argc, uint32_t arg, ...);
 static int  lm3s_ifup(struct uip_driver_s *dev);
 static int  lm3s_ifdown(struct uip_driver_s *dev);
 static int  lm3s_txavail(struct uip_driver_s *dev);
+#ifdef CONFIG_NET_IGMP
+static int  lm3s_addmac(struct uip_driver_s *dev, FAR const uint8_t *mac);
+static int  lm3s_rmmac(struct uip_driver_s *dev, FAR const uint8_t *mac);
+#endif
 
 /****************************************************************************
  * Private Functions
@@ -1281,6 +1285,66 @@ static int lm3s_txavail(struct uip_driver_s *dev)
   return OK;
 }
 
+/****************************************************************************
+ * Function: lm3s_addmac
+ *
+ * Description:
+ *   NuttX Callback: Add the specified MAC address to the hardware multicast
+ *   address filtering
+ *
+ * Parameters:
+ *   dev  - Reference to the NuttX driver state structure
+ *   mac  - The MAC address to be added 
+ *
+ * Returned Value:
+ *   None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_NET_IGMP
+static int lm3s_addmac(struct uip_driver_s *dev, FAR const uint8_t *mac)
+{
+  FAR struct lm3s_driver_s *priv = (FAR struct lm3s_driver_s *)dev->d_private;
+
+  /* Add the MAC address to the hardware multicast routing table */
+
+#warning "Multicast MAC support not implemented"
+  return OK;
+}
+#endif
+
+/****************************************************************************
+ * Function: lm3s_rmmac
+ *
+ * Description:
+ *   NuttX Callback: Remove the specified MAC address from the hardware multicast
+ *   address filtering
+ *
+ * Parameters:
+ *   dev  - Reference to the NuttX driver state structure
+ *   mac  - The MAC address to be removed 
+ *
+ * Returned Value:
+ *   None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_NET_IGMP
+static int lm3s_rmmac(struct uip_driver_s *dev, FAR const uint8_t *mac)
+{
+  FAR struct lm3s_driver_s *priv = (FAR struct lm3s_driver_s *)dev->d_private;
+
+  /* Add the MAC address to the hardware multicast routing table */
+
+#warning "Multicast MAC support not implemented"
+  return OK;
+}
+#endif
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -1327,6 +1391,10 @@ static inline int lm3s_ethinitialize(int intf)
   priv->ld_dev.d_ifup    = lm3s_ifup;     /* I/F down callback */
   priv->ld_dev.d_ifdown  = lm3s_ifdown;   /* I/F up (new IP address) callback */
   priv->ld_dev.d_txavail = lm3s_txavail;  /* New TX data callback */
+#ifdef CONFIG_NET_IGMP
+  priv->ld_dev.d_addmac  = lm3s_addmac;   /* Add multicast MAC address */
+  priv->ld_dev.d_rmmac   = lm3s_rmmac;    /* Remove multicast MAC address */
+#endif
   priv->ld_dev.d_private = (void*)priv;   /* Used to recover private state from dev */
 
   /* Create a watchdog for timing polling for and timing of transmisstions */
diff --git a/arch/z80/src/ez80/ez80_emac.c b/arch/z80/src/ez80/ez80_emac.c
index 75b96a6be00..a8db36a679b 100644
--- a/arch/z80/src/ez80/ez80_emac.c
+++ b/arch/z80/src/ez80/ez80_emac.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * drivers/net/ez80_emac.c
  *
- *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * References:
@@ -377,6 +377,10 @@ static void ez80emac_txtimeout(int argc, uint32_t arg, ...);
 static int  ez80emac_ifup(struct uip_driver_s *dev);
 static int  ez80emac_ifdown(struct uip_driver_s *dev);
 static int  ez80emac_txavail(struct uip_driver_s *dev);
+#ifdef CONFIG_NET_IGMP
+static int ez80emac_addmac(struct uip_driver_s *dev, FAR const uint8_t *mac);
+static int ez80emac_rmmac(struct uip_driver_s *dev, FAR const uint8_t *mac);
+#endif
 
 /* Initialization */
 
@@ -1794,6 +1798,66 @@ static int ez80emac_txavail(struct uip_driver_s *dev)
   return OK;
 }
 
+/****************************************************************************
+ * Function: ez80emac_addmac
+ *
+ * Description:
+ *   NuttX Callback: Add the specified MAC address to the hardware multicast
+ *   address filtering
+ *
+ * Parameters:
+ *   dev  - Reference to the NuttX driver state structure
+ *   mac  - The MAC address to be added 
+ *
+ * Returned Value:
+ *   None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_NET_IGMP
+static int ez80emac_addmac(struct uip_driver_s *dev, FAR const uint8_t *mac)
+{
+  FAR struct ez80emac_driver_s *priv = (FAR struct ez80emac_driver_s *)dev->d_private;
+
+  /* Add the MAC address to the hardware multicast routing table */
+
+#warning "Multicast MAC support not implemented"
+  return OK;
+}
+#endif
+
+/****************************************************************************
+ * Function: ez80emac_rmmac
+ *
+ * Description:
+ *   NuttX Callback: Remove the specified MAC address from the hardware multicast
+ *   address filtering
+ *
+ * Parameters:
+ *   dev  - Reference to the NuttX driver state structure
+ *   mac  - The MAC address to be removed 
+ *
+ * Returned Value:
+ *   None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_NET_IGMP
+static int ez80emac_rmmac(struct uip_driver_s *dev, FAR const uint8_t *mac)
+{
+  FAR struct ez80emac_driver_s *priv = (FAR struct ez80emac_driver_s *)dev->d_private;
+
+  /* Add the MAC address to the hardware multicast routing table */
+
+#warning "Multicast MAC support not implemented"
+  return OK;
+}
+#endif
+
 /****************************************************************************
  * Function: ez80emac_initialize
  *
@@ -2069,6 +2133,10 @@ int up_netinitialize(void)
   priv->dev.d_ifup    = ez80emac_ifup;      /* I/F down callback */
   priv->dev.d_ifdown  = ez80emac_ifdown;    /* I/F up (new IP address) callback */
   priv->dev.d_txavail = ez80emac_txavail;   /* New TX data callback */
+#ifdef CONFIG_NET_IGMP
+  priv->dev.d_addmac  = ez80emac_addmac;    /* Add multicast MAC address */
+  priv->dev.d_rmmac   = ez80emac_rmmac;     /* Remove multicast MAC address */
+#endif
   priv->dev.d_private = (FAR void*)&g_emac; /* Used to recover private state from dev */
 
   /* Create a watchdog for timing polling for and timing of transmisstions */