diff --git a/arch/arm/src/c5471/c5471_ethernet.c b/arch/arm/src/c5471/c5471_ethernet.c
index b7563aa054..62fe06eb0f 100644
--- a/arch/arm/src/c5471/c5471_ethernet.c
+++ b/arch/arm/src/c5471/c5471_ethernet.c
@@ -279,6 +279,10 @@
  * Private Types
  ****************************************************************************/
 
+/* A single packet buffer is used */
+
+static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
+
 /* The c5471_driver_s encapsulates all state information for a single c5471
  * hardware interface
  */
@@ -2248,6 +2252,7 @@ void up_netinitialize(void)
   /* Initialize the driver structure */
 
   memset(g_c5471, 0, CONFIG_C5471_NET_NINTERFACES*sizeof(struct c5471_driver_s));
+  g_c5471[0].c_dev.d_buf     = g_pktbuf;        /* Single packet buffer */
   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 */
diff --git a/arch/arm/src/kinetis/Kconfig b/arch/arm/src/kinetis/Kconfig
index cf781ade5e..a585a57fe4 100644
--- a/arch/arm/src/kinetis/Kconfig
+++ b/arch/arm/src/kinetis/Kconfig
@@ -254,7 +254,6 @@ config KINETIS_ENET
 	select ARCH_HAVE_NETDEV_STATISTICS
 	select NET
 	select NETDEVICES
-	select NET_MULTIBUFFER
 	---help---
 		Support Ethernet (K6x only)
 
diff --git a/arch/arm/src/kinetis/kinetis_enet.c b/arch/arm/src/kinetis/kinetis_enet.c
index a546103d36..e83c3fcc94 100644
--- a/arch/arm/src/kinetis/kinetis_enet.c
+++ b/arch/arm/src/kinetis/kinetis_enet.c
@@ -119,10 +119,6 @@
 #define NENET_NBUFFERS \
   (CONFIG_KINETIS_ENETNTXBUFFERS+CONFIG_KINETIS_ENETNRXBUFFERS)
 
-#ifndef CONFIG_NET_MULTIBUFFER
-#  error "CONFIG_NET_MULTIBUFFER is required in the configuration"
-#endif
-
 /* TX poll delay = 1 seconds. CLK_TCK is the number of clock ticks per
  * second.
  */
diff --git a/arch/arm/src/lpc17xx/lpc17_ethernet.c b/arch/arm/src/lpc17xx/lpc17_ethernet.c
index d5ff009fd6..150602b1e5 100644
--- a/arch/arm/src/lpc17xx/lpc17_ethernet.c
+++ b/arch/arm/src/lpc17xx/lpc17_ethernet.c
@@ -138,6 +138,8 @@
 #  define CONFIG_NET_PRIORITY NVIC_SYSH_PRIORITY_DEFAULT
 #endif
 
+#define PKTBUF_SIZE (MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE)
+
 /* Debug Configuration *****************************************************/
 /* Register debug -- can only happen of CONFIG_DEBUG_NET_INFO is selected */
 
@@ -290,6 +292,10 @@ struct lpc17_driver_s
  * Private Data
  ****************************************************************************/
 
+/* A single packet buffer per interface is used */
+
+static uint8_t g_pktbuf[PKTBUF_SIZE * CONFIG_LPC17_NINTERFACES];
+
 /* Array of ethernet driver status structures */
 
 static struct lpc17_driver_s g_ethdrvr[CONFIG_LPC17_NINTERFACES];
@@ -3206,6 +3212,7 @@ static inline int lpc17_ethinitialize(int intf)
 #endif
 {
   struct lpc17_driver_s *priv;
+  uint8_t *pktbuf;
   uint32_t regval;
   int ret;
   int i;
@@ -3225,11 +3232,17 @@ static inline int lpc17_ethinitialize(int intf)
     {
       (void)lpc17_configgpio(g_enetpins[i]);
     }
+
   lpc17_showpins();
 
+  /* Select the packet buffer */
+
+  pktbuf = &g_pktbuf[PKTBUF_SIZE * intf];
+
   /* Initialize the driver structure */
 
   memset(priv, 0, sizeof(struct lpc17_driver_s));
+  priv->lp_dev.d_buf     = pktbuf;        /* Single packet buffer */
   priv->lp_dev.d_ifup    = lpc17_ifup;    /* I/F down callback */
   priv->lp_dev.d_ifdown  = lpc17_ifdown;  /* I/F up (new IP address) callback */
   priv->lp_dev.d_txavail = lpc17_txavail; /* New TX data callback */
@@ -3237,7 +3250,7 @@ static inline int lpc17_ethinitialize(int intf)
   priv->lp_dev.d_addmac  = lpc17_addmac;  /* Add multicast MAC address */
   priv->lp_dev.d_rmmac   = lpc17_rmmac;   /* Remove multicast MAC address */
 #endif
-  priv->lp_dev.d_private = (void *)priv;   /* Used to recover private state from dev */
+  priv->lp_dev.d_private = (void *)priv;  /* Used to recover private state from dev */
 
 #if CONFIG_LPC17_NINTERFACES > 1
 # error "A mechanism to associate base address an IRQ with an interface is needed"
diff --git a/arch/arm/src/lpc43xx/lpc43_ethernet.c b/arch/arm/src/lpc43xx/lpc43_ethernet.c
index c96f1a7551..35d9926b52 100644
--- a/arch/arm/src/lpc43xx/lpc43_ethernet.c
+++ b/arch/arm/src/lpc43xx/lpc43_ethernet.c
@@ -164,12 +164,6 @@
 #undef CONFIG_LPC43_ETH_ENHANCEDDESC
 #undef CONFIG_LPC43_ETH_HWCHECKSUM
 
-/* Ethernet buffer sizes, number of buffers, and number of descriptors */
-
-#ifndef CONFIG_NET_MULTIBUFFER
-#  error "CONFIG_NET_MULTIBUFFER is required"
-#endif
-
 /* Add 4 to the configured buffer size to account for the 2 byte checksum
  * memory needed at the end of the maximum size packet.  Buffer sizes must
  * be an even multiple of 4, 8, or 16 bytes (depending on buswidth).  We
diff --git a/arch/arm/src/sam34/sam_emac.c b/arch/arm/src/sam34/sam_emac.c
index 15e7b1b4ba..6f234cebcb 100644
--- a/arch/arm/src/sam34/sam_emac.c
+++ b/arch/arm/src/sam34/sam_emac.c
@@ -313,7 +313,6 @@ struct sam_emac_s
 
 static struct sam_emac_s g_emac;
 
-#ifdef CONFIG_NET_MULTIBUFFER
 /* A single packet buffer is used
  *
  * REVISIT:  It might be possible to use this option to send and receive
@@ -324,7 +323,6 @@ static struct sam_emac_s g_emac;
  */
 
 static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
-#endif
 
 #ifdef CONFIG_SAM34_EMAC_PREALLOCATE
 /* Preallocated data */
@@ -3820,9 +3818,7 @@ void up_netinitialize(void)
   /* Initialize the driver structure */
 
   memset(priv, 0, sizeof(struct sam_emac_s));
-#ifdef CONFIG_NET_MULTIBUFFER
   priv->dev.d_buf     = g_pktbuf;        /* Single packet buffer */
-#endif
   priv->dev.d_ifup    = sam_ifup;        /* I/F up (new IP address) callback */
   priv->dev.d_ifdown  = sam_ifdown;      /* I/F down callback */
   priv->dev.d_txavail = sam_txavail;     /* New TX data callback */
diff --git a/arch/arm/src/sama5/sam_emaca.c b/arch/arm/src/sama5/sam_emaca.c
index 672a3efc7f..67715ee204 100644
--- a/arch/arm/src/sama5/sam_emaca.c
+++ b/arch/arm/src/sama5/sam_emaca.c
@@ -290,7 +290,6 @@ struct sam_emac_s
 
 static struct sam_emac_s g_emac;
 
-#ifdef CONFIG_NET_MULTIBUFFER
 /* A single packet buffer is used
  *
  * REVISIT:  It might be possible to use this option to send and receive
@@ -301,7 +300,6 @@ static struct sam_emac_s g_emac;
  */
 
 static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
-#endif
 
 #ifdef CONFIG_SAMA5_EMACA_PREALLOCATE
 /* Preallocated data */
@@ -3486,9 +3484,7 @@ int sam_emac_initialize(void)
   /* Initialize the driver structure */
 
   memset(priv, 0, sizeof(struct sam_emac_s));
-#ifdef CONFIG_NET_MULTIBUFFER
   priv->dev.d_buf     = g_pktbuf;        /* Single packet buffer */
-#endif
   priv->dev.d_ifup    = sam_ifup;        /* I/F up (new IP address) callback */
   priv->dev.d_ifdown  = sam_ifdown;      /* I/F down callback */
   priv->dev.d_txavail = sam_txavail;     /* New TX data callback */
diff --git a/arch/arm/src/sama5/sam_emacb.c b/arch/arm/src/sama5/sam_emacb.c
index 3d9f282ce9..6eb3dd2108 100644
--- a/arch/arm/src/sama5/sam_emacb.c
+++ b/arch/arm/src/sama5/sam_emacb.c
@@ -710,7 +710,6 @@ static const struct sam_emacattr_s g_emac0_attr =
 #endif
 };
 
-#ifdef CONFIG_NET_MULTIBUFFER
 /* A single packet buffer is used
  *
  * REVISIT:  It might be possible to use this option to send and receive
@@ -721,7 +720,6 @@ static const struct sam_emacattr_s g_emac0_attr =
  */
 
 static uint8_t g_pktbuf0[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
-#endif
 
 /* EMAC0 peripheral state */
 
@@ -793,7 +791,6 @@ static const struct sam_emacattr_s g_emac1_attr =
 #endif
 };
 
-#ifdef CONFIG_NET_MULTIBUFFER
 /* A single packet buffer is used
  *
  * REVISIT:  It might be possible to use this option to send and receive
@@ -804,7 +801,6 @@ static const struct sam_emacattr_s g_emac1_attr =
  */
 
 static uint8_t g_pktbuf1[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
-#endif
 
 /* EMAC1 peripheral state */
 
@@ -4546,9 +4542,7 @@ int sam_emac_initialize(int intf)
 {
   struct sam_emac_s *priv;
   const struct sam_emacattr_s *attr;
-#ifdef CONFIG_NET_MULTIBUFFER
   uint8_t *pktbuf;
-#endif
 #if defined(CONFIG_NETDEV_PHY_IOCTL) && defined(CONFIG_ARCH_PHY_INTERRUPT)
   uint8_t phytype;
 #endif
@@ -4559,10 +4553,7 @@ int sam_emac_initialize(int intf)
     {
       priv    = &g_emac0;
       attr    = &g_emac0_attr;
-
-#ifdef CONFIG_NET_MULTIBUFFER
       pktbuf  = g_pktbuf0;
-#endif
 
 #if defined(CONFIG_NETDEV_PHY_IOCTL) && defined(CONFIG_ARCH_PHY_INTERRUPT)
       phytype = SAMA5_EMAC0_PHY_TYPE;
@@ -4575,10 +4566,7 @@ int sam_emac_initialize(int intf)
     {
       priv    = &g_emac1;
       attr    = &g_emac1_attr;
-
-#ifdef CONFIG_NET_MULTIBUFFER
       pktbuf  = g_pktbuf1;
-#endif
 
 #if defined(CONFIG_NETDEV_PHY_IOCTL) && defined(CONFIG_ARCH_PHY_INTERRUPT)
       phytype = SAMA5_EMAC1_PHY_TYPE;
@@ -4595,9 +4583,7 @@ int sam_emac_initialize(int intf)
 
   memset(priv, 0, sizeof(struct sam_emac_s));
   priv->attr          = attr;           /* Save the constant attributes */
-#ifdef CONFIG_NET_MULTIBUFFER
   priv->dev.d_buf     = pktbuf;         /* Single packet buffer */
-#endif
   priv->dev.d_ifup    = sam_ifup;       /* I/F up (new IP address) callback */
   priv->dev.d_ifdown  = sam_ifdown;     /* I/F down callback */
   priv->dev.d_txavail = sam_txavail;    /* New TX data callback */
diff --git a/arch/arm/src/sama5/sam_gmac.c b/arch/arm/src/sama5/sam_gmac.c
index 5442920ee0..d264282117 100644
--- a/arch/arm/src/sama5/sam_gmac.c
+++ b/arch/arm/src/sama5/sam_gmac.c
@@ -216,7 +216,6 @@ struct sam_gmac_s
 
 static struct sam_gmac_s g_gmac;
 
-#ifdef CONFIG_NET_MULTIBUFFER
 /* A single packet buffer is used
  *
  * REVISIT:  It might be possible to use this option to send and receive
@@ -227,7 +226,6 @@ static struct sam_gmac_s g_gmac;
  */
 
 static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
-#endif
 
 #ifdef CONFIG_SAMA5_GMAC_PREALLOCATE
 /* Preallocated data */
@@ -3558,9 +3556,7 @@ int sam_gmac_initialize(void)
   /* Initialize the driver structure */
 
   memset(priv, 0, sizeof(struct sam_gmac_s));
-#ifdef CONFIG_NET_MULTIBUFFER
   priv->dev.d_buf     = g_pktbuf;        /* Single packet buffer */
-#endif
   priv->dev.d_ifup    = sam_ifup;        /* I/F up (new IP address) callback */
   priv->dev.d_ifdown  = sam_ifdown;      /* I/F down callback */
   priv->dev.d_txavail = sam_txavail;     /* New TX data callback */
diff --git a/arch/arm/src/samv7/sam_emac.c b/arch/arm/src/samv7/sam_emac.c
index 2eefdcefa7..8c9c9e0827 100644
--- a/arch/arm/src/samv7/sam_emac.c
+++ b/arch/arm/src/samv7/sam_emac.c
@@ -856,7 +856,6 @@ static const struct sam_emacattr_s g_emac0_attr =
 #endif
 };
 
-#ifdef CONFIG_NET_MULTIBUFFER
 /* A single packet buffer is used
  *
  * REVISIT:  It might be possible to use this option to send and receive
@@ -867,7 +866,6 @@ static const struct sam_emacattr_s g_emac0_attr =
  */
 
 static uint8_t g_pktbuf0[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
-#endif
 
 /* EMAC0 peripheral state */
 
@@ -939,7 +937,6 @@ static const struct sam_emacattr_s g_emac1_attr =
 #endif
 };
 
-#ifdef CONFIG_NET_MULTIBUFFER
 /* A single packet buffer is used
  *
  * REVISIT:  It might be possible to use this option to send and receive
@@ -950,7 +947,6 @@ static const struct sam_emacattr_s g_emac1_attr =
  */
 
 static uint8_t g_pktbuf1[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
-#endif
 
 /* EMAC1 peripheral state */
 
@@ -5112,9 +5108,7 @@ int sam_emac_initialize(int intf)
 {
   struct sam_emac_s *priv;
   const struct sam_emacattr_s *attr;
-#ifdef CONFIG_NET_MULTIBUFFER
   uint8_t *pktbuf;
-#endif
 #if defined(CONFIG_NETDEV_PHY_IOCTL) && defined(CONFIG_ARCH_PHY_INTERRUPT)
   uint8_t phytype;
 #endif
@@ -5125,10 +5119,7 @@ int sam_emac_initialize(int intf)
     {
       priv    = &g_emac0;
       attr    = &g_emac0_attr;
-
-#ifdef CONFIG_NET_MULTIBUFFER
       pktbuf  = g_pktbuf0;
-#endif
 
 #if defined(CONFIG_NETDEV_PHY_IOCTL) && defined(CONFIG_ARCH_PHY_INTERRUPT)
       phytype = SAMV7_EMAC0_PHY_TYPE;
@@ -5141,10 +5132,7 @@ int sam_emac_initialize(int intf)
     {
       priv    = &g_emac1;
       attr    = &g_emac1_attr;
-
-#ifdef CONFIG_NET_MULTIBUFFER
       pktbuf  = g_pktbuf1;
-#endif
 
 #if defined(CONFIG_NETDEV_PHY_IOCTL) && defined(CONFIG_ARCH_PHY_INTERRUPT)
       phytype = SAMV7_EMAC1_PHY_TYPE;
@@ -5161,9 +5149,7 @@ int sam_emac_initialize(int intf)
 
   memset(priv, 0, sizeof(struct sam_emac_s));
   priv->attr          = attr;           /* Save the constant attributes */
-#ifdef CONFIG_NET_MULTIBUFFER
   priv->dev.d_buf     = pktbuf;         /* Single packet buffer */
-#endif
   priv->dev.d_ifup    = sam_ifup;       /* I/F up (new IP address) callback */
   priv->dev.d_ifdown  = sam_ifdown;     /* I/F down callback */
   priv->dev.d_txavail = sam_txavail;    /* New TX data callback */
diff --git a/arch/arm/src/stm32/stm32_eth.c b/arch/arm/src/stm32/stm32_eth.c
index 635940ac95..8bb121237a 100644
--- a/arch/arm/src/stm32/stm32_eth.c
+++ b/arch/arm/src/stm32/stm32_eth.c
@@ -207,12 +207,6 @@
 #undef CONFIG_STM32_ETH_ENHANCEDDESC
 #undef CONFIG_STM32_ETH_HWCHECKSUM
 
-/* Ethernet buffer sizes, number of buffers, and number of descriptors */
-
-#ifndef CONFIG_NET_MULTIBUFFER
-#  error "CONFIG_NET_MULTIBUFFER is required"
-#endif
-
 /* Add 4 to the configured buffer size to account for the 2 byte checksum
  * memory needed at the end of the maximum size packet.  Buffer sizes must
  * be an even multiple of 4, 8, or 16 bytes (depending on buswidth).  We
diff --git a/arch/arm/src/stm32f7/stm32_ethernet.c b/arch/arm/src/stm32f7/stm32_ethernet.c
index eccf15b348..8301f80e5b 100644
--- a/arch/arm/src/stm32f7/stm32_ethernet.c
+++ b/arch/arm/src/stm32f7/stm32_ethernet.c
@@ -194,12 +194,6 @@
 #undef CONFIG_STM32F7_ETH_ENHANCEDDESC
 #undef CONFIG_STM32F7_ETH_HWCHECKSUM
 
-/* Ethernet buffer sizes, number of buffers, and number of descriptors */
-
-#ifndef CONFIG_NET_MULTIBUFFER
-#  error "CONFIG_NET_MULTIBUFFER is required"
-#endif
-
 /* Add 4 to the configured buffer size to account for the 2 byte checksum
  * memory needed at the end of the maximum size packet.  Buffer sizes must
  * be an even multiple of 4, 8, or 16 bytes (depending on buswidth).  We
diff --git a/arch/arm/src/tiva/lm3s_ethernet.c b/arch/arm/src/tiva/lm3s_ethernet.c
index cbdf0dac53..852c19a0d3 100644
--- a/arch/arm/src/tiva/lm3s_ethernet.c
+++ b/arch/arm/src/tiva/lm3s_ethernet.c
@@ -191,11 +191,9 @@ struct tiva_driver_s
  * Private Data
  ****************************************************************************/
 
-#ifdef CONFIG_NET_MULTIBUFFER
 /* A single packet buffer is used */
 
 static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
-#endif
 
 /* Ethernet peripheral state */
 
@@ -1472,9 +1470,7 @@ static inline int tiva_ethinitialize(int intf)
   /* Initialize the driver structure */
 
   memset(priv, 0, sizeof(struct tiva_driver_s));
-#ifdef CONFIG_NET_MULTIBUFFER
   priv->ld_dev.d_buf     = g_pktbuf;      /* Single packet buffer */
-#endif
   priv->ld_dev.d_ifup    = tiva_ifup;     /* I/F down callback */
   priv->ld_dev.d_ifdown  = tiva_ifdown;   /* I/F up (new IP address) callback */
   priv->ld_dev.d_txavail = tiva_txavail;  /* New TX data callback */
diff --git a/arch/arm/src/tiva/tm4c_ethernet.c b/arch/arm/src/tiva/tm4c_ethernet.c
index 3882a95db3..e00bf6ef31 100644
--- a/arch/arm/src/tiva/tm4c_ethernet.c
+++ b/arch/arm/src/tiva/tm4c_ethernet.c
@@ -219,10 +219,6 @@
 
 /* Ethernet buffer sizes, number of buffers, and number of descriptors */
 
-#ifndef CONFIG_NET_MULTIBUFFER
-#  error CONFIG_NET_MULTIBUFFER is required
-#endif
-
 #ifndef CONFIG_TIVA_EMAC_NRXDESC
 #  define CONFIG_TIVA_EMAC_NRXDESC 8
 #endif
diff --git a/arch/hc/src/m9s12/m9s12_ethernet.c b/arch/hc/src/m9s12/m9s12_ethernet.c
index fe2656e97a..3a85446e6d 100644
--- a/arch/hc/src/m9s12/m9s12_ethernet.c
+++ b/arch/hc/src/m9s12/m9s12_ethernet.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/hc/src/m9s12/m9s12_ethernet.c
  *
- *   Copyright (C) 2011, 2014-2015 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2011, 2014-2016 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -106,6 +106,12 @@ struct emac_driver_s
  * Private Data
  ****************************************************************************/
 
+/* A single packet buffer is used */
+
+static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
+
+/* Driver state structure */
+
 static struct emac_driver_s g_emac[CONFIG_HCS12_NINTERFACES];
 
 /****************************************************************************
@@ -756,6 +762,7 @@ int emac_initialize(int intf)
   /* Initialize the driver structure */
 
   memset(priv, 0, sizeof(struct emac_driver_s));
+  priv->d_dev.d_buf     = g_pktbuf;      /* Single packet buffer */
   priv->d_dev.d_ifup    = emac_ifup;     /* I/F down callback */
   priv->d_dev.d_ifdown  = emac_ifdown;   /* I/F up (new IP address) callback */
   priv->d_dev.d_txavail = emac_txavail;  /* New TX data callback */
@@ -767,8 +774,8 @@ int emac_initialize(int intf)
 
   /* Create a watchdog for timing polling for and timing of transmisstions */
 
-  priv->d_txpoll       = wd_create();   /* Create periodic poll timer */
-  priv->d_txtimeout    = wd_create();   /* Create TX timeout timer */
+  priv->d_txpoll       = wd_create();    /* Create periodic poll timer */
+  priv->d_txtimeout    = wd_create();    /* Create TX timeout timer */
 
   /* Put the interface in the down state.  This usually amounts to resetting
    * the device and/or calling emac_ifdown().
diff --git a/arch/mips/src/pic32mx/pic32mx-ethernet.c b/arch/mips/src/pic32mx/pic32mx-ethernet.c
index 8a1bc08482..1b1ebcb6fc 100644
--- a/arch/mips/src/pic32mx/pic32mx-ethernet.c
+++ b/arch/mips/src/pic32mx/pic32mx-ethernet.c
@@ -102,12 +102,6 @@
 #  define CONFIG_PIC32MX_NINTERFACES 1
 #endif
 
-/* CONFIG_NET_MULTIBUFFER is required */
-
-#ifndef CONFIG_NET_MULTIBUFFER
-#  error "CONFIG_NET_MULTIBUFFER=y is required"
-#endif
-
 /* If IGMP is enabled, then accept multi-cast frames. */
 
 #if defined(CONFIG_NET_IGMP) && !defined(CONFIG_PIC32MX_MULTICAST)
diff --git a/arch/mips/src/pic32mz/pic32mz-ethernet.c b/arch/mips/src/pic32mz/pic32mz-ethernet.c
index b2df365449..fe245e5a74 100644
--- a/arch/mips/src/pic32mz/pic32mz-ethernet.c
+++ b/arch/mips/src/pic32mz/pic32mz-ethernet.c
@@ -102,12 +102,6 @@
 #  define CONFIG_PIC32MZ_NINTERFACES 1
 #endif
 
-/* CONFIG_NET_MULTIBUFFER is required */
-
-#ifndef CONFIG_NET_MULTIBUFFER
-#  error "CONFIG_NET_MULTIBUFFER=y is required"
-#endif
-
 /* If IGMP is enabled, then accept multi-cast frames. */
 
 #if defined(CONFIG_NET_IGMP) && !defined(CONFIG_PIC32MZ_MULTICAST)
diff --git a/arch/misoc/src/common/misoc_net.c b/arch/misoc/src/common/misoc_net.c
index 7b4b84c2f0..8854616266 100644
--- a/arch/misoc/src/common/misoc_net.c
+++ b/arch/misoc/src/common/misoc_net.c
@@ -140,6 +140,12 @@ struct misoc_net_driver_s
  * Private Data
  ****************************************************************************/
 
+/* A single packet buffer is used */
+
+static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
+
+/* Driver state structur */
+
 static struct misoc_net_driver_s g_misoc_net[CONFIG_MISOC_NET_NINTERFACES];
 
 /****************************************************************************
@@ -1333,6 +1339,7 @@ int misoc_net_initialize(int intf)
   priv->tx_buf = priv->tx0_buf;
   priv->tx_slot=0;
 
+  priv->misoc_net_dev.d_buf     = g_pktbuf;           /* Single packet buffer */
   priv->misoc_net_dev.d_ifup    = misoc_net_ifup;     /* I/F up (new IP address) callback */
   priv->misoc_net_dev.d_ifdown  = misoc_net_ifdown;   /* I/F down callback */
   priv->misoc_net_dev.d_txavail = misoc_net_txavail;  /* New TX data callback */
diff --git a/arch/sim/src/up_netdriver.c b/arch/sim/src/up_netdriver.c
index 1e7ef5345c..d9c12ae339 100644
--- a/arch/sim/src/up_netdriver.c
+++ b/arch/sim/src/up_netdriver.c
@@ -78,15 +78,18 @@ struct timer
   uint32_t start;
 };
 
-/****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
 
 static struct timer g_periodic_timer;
+
+/* A single packet buffer is used */
+
+static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
+
+/* Ethernet peripheral state */
+
 static struct net_driver_s g_sim_dev;
 
 /****************************************************************************
@@ -340,6 +343,7 @@ int netdriver_init(void)
 
   /* Set callbacks */
 
+  g_sim_dev.d_buf    = g_pktbuf;         /* Single packet buffer */
   g_sim_dev.d_ifup   = netdriver_ifup;
   g_sim_dev.d_ifdown = netdriver_ifdown;
 
diff --git a/arch/z80/src/ez80/ez80_emac.c b/arch/z80/src/ez80/ez80_emac.c
index d4e56bf04f..0020991551 100644
--- a/arch/z80/src/ez80/ez80_emac.c
+++ b/arch/z80/src/ez80/ez80_emac.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/z80/src/ez80/ez80_emac.c
  *
- *   Copyright (C) 2009-2010, 2012, 2014-2015 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2009-2010, 2012, 2014-2016 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * References:
@@ -334,6 +334,10 @@ struct ez80emac_driver_s
  * Private Data
  ****************************************************************************/
 
+/* A single packet buffer is used */
+
+static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
+
 /* There is only a single instance of driver private data (because there is
  * only one EMAC interface.
  */
@@ -2224,6 +2228,7 @@ int up_netinitialize(void)
   /* Initialize the driver structure */
 
   memset(&g_emac, 0, sizeof(struct ez80emac_driver_s));
+  priv->dev.d_buf     = g_pktbuf;           /* Single packet buffer */
   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 */