diff --git a/include/nuttx/net/netdev.h b/include/nuttx/net/netdev.h
index e66c378d5f..f6785996e4 100644
--- a/include/nuttx/net/netdev.h
+++ b/include/nuttx/net/netdev.h
@@ -146,17 +146,11 @@ struct net_driver_s
 #endif
 
   /* d_appdata points to the location where application data can be read from
-   * or written into a packet.
+   * or written to in the the packet buffer.
    */
 
   uint8_t *d_appdata;
 
-  /* This is a pointer into d_buf where a user application may append
-   * data to be sent.
-   */
-
-  uint8_t *d_snddata;
-
 #ifdef CONFIG_NET_TCPURGDATA
   /* This pointer points to any urgent TCP data that has been received. Only
    * present if compiled with support for urgent data (CONFIG_NET_TCPURGDATA).
@@ -185,7 +179,7 @@ struct net_driver_s
   uint16_t d_len;
 
   /* When d_buf contains outgoing xmit data, d_sndlen is non-zero and represents
-   * the amount of application data after d_snddata
+   * the amount of application data after d_appdata
    */
 
   uint16_t d_sndlen;
diff --git a/net/arp/arp_poll.c b/net/arp/arp_poll.c
index 111547b319..854fce929f 100644
--- a/net/arp/arp_poll.c
+++ b/net/arp/arp_poll.c
@@ -82,8 +82,6 @@ int arp_poll(FAR struct net_driver_s *dev, devif_poll_callback_t callback)
   /* Setup for the ARP callback (most of these do not apply) */
 
   dev->d_appdata = NULL;
-  dev->d_snddata = NULL;
-
   dev->d_len     = 0;
   dev->d_sndlen  = 0;
 
diff --git a/net/devif/devif_iobsend.c b/net/devif/devif_iobsend.c
index 27e1adcbc8..f1f0248b6e 100644
--- a/net/devif/devif_iobsend.c
+++ b/net/devif/devif_iobsend.c
@@ -103,13 +103,13 @@ void devif_iob_send(FAR struct net_driver_s *dev, FAR struct iob_s *iob,
 
   /* Copy the data from the I/O buffer chain to the device buffer */
 
-  iob_copyout(dev->d_snddata, iob, len, offset);
+  iob_copyout(dev->d_appdata, iob, len, offset);
   dev->d_sndlen = len;
 
 #ifdef CONFIG_NET_TCP_WRBUFFER_DUMP
   /* Dump the outgoing device buffer */
 
-  lib_dumpbuffer("devif_iob_send", dev->d_snddata, len);
+  lib_dumpbuffer("devif_iob_send", dev->d_appdata, len);
 #endif
 }
 
diff --git a/net/devif/devif_pktsend.c b/net/devif/devif_pktsend.c
index 1dc1a41a6c..d03548eda7 100644
--- a/net/devif/devif_pktsend.c
+++ b/net/devif/devif_pktsend.c
@@ -87,7 +87,7 @@
  *   an xmit or poll request from the the network interface driver.
  *
  *   This is almost identical to calling devif_send() except that the data to
- *   be sent is copied into dev->d_buf (vs. dev->d_snddata), since there is
+ *   be sent is copied into dev->d_buf (vs. dev->d_appdata), since there is
  *   no header on the data.
  *
  * Assumptions:
diff --git a/net/devif/devif_send.c b/net/devif/devif_send.c
index 1738c28e50..0409ba3daf 100644
--- a/net/devif/devif_send.c
+++ b/net/devif/devif_send.c
@@ -96,6 +96,6 @@ void devif_send(struct net_driver_s *dev, const void *buf, int len)
 {
   DEBUGASSERT(dev && len > 0 && len < NET_DEV_MTU(dev));
 
-  memcpy(dev->d_snddata, buf, len);
+  memcpy(dev->d_appdata, buf, len);
   dev->d_sndlen = len;
 }
diff --git a/net/icmp/icmp_poll.c b/net/icmp/icmp_poll.c
index 6c3f63b26c..4f99464ddf 100644
--- a/net/icmp/icmp_poll.c
+++ b/net/icmp/icmp_poll.c
@@ -91,8 +91,6 @@ void icmp_poll(FAR struct net_driver_s *dev)
   /* Setup for the application callback */
 
   dev->d_appdata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPICMP_HDRLEN];
-  dev->d_snddata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPICMP_HDRLEN];
-
   dev->d_len     = 0;
   dev->d_sndlen  = 0;
 
diff --git a/net/icmpv6/icmpv6_poll.c b/net/icmpv6/icmpv6_poll.c
index 8c06b53d25..20ca9210c7 100644
--- a/net/icmpv6/icmpv6_poll.c
+++ b/net/icmpv6/icmpv6_poll.c
@@ -91,8 +91,6 @@ void icmpv6_poll(FAR struct net_driver_s *dev)
   /* Setup for the application callback */
 
   dev->d_appdata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPICMPv6_HDRLEN];
-  dev->d_snddata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPICMPv6_HDRLEN];
-
   dev->d_len     = 0;
   dev->d_sndlen  = 0;
 
diff --git a/net/igmp/igmp_poll.c b/net/igmp/igmp_poll.c
index 7cc1cfb9c2..6beb8a31e6 100644
--- a/net/igmp/igmp_poll.c
+++ b/net/igmp/igmp_poll.c
@@ -152,8 +152,6 @@ void igmp_poll(FAR struct net_driver_s *dev)
   /* Setup the poll operation */
 
   dev->d_appdata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPIGMP_HDRLEN];
-  dev->d_snddata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPIGMP_HDRLEN];
-
   dev->d_len     = 0;
   dev->d_sndlen  = 0;
 
diff --git a/net/pkt/pkt_input.c b/net/pkt/pkt_input.c
index 9f0ce783ed..733da5596f 100644
--- a/net/pkt/pkt_input.c
+++ b/net/pkt/pkt_input.c
@@ -109,7 +109,6 @@ int pkt_input(struct net_driver_s *dev)
       /* Setup for the application callback */
 
       dev->d_appdata = dev->d_buf;
-      dev->d_snddata = dev->d_buf;
       dev->d_sndlen  = 0;
 
       /* Perform the application callback */
diff --git a/net/pkt/pkt_poll.c b/net/pkt/pkt_poll.c
index e3db35b569..701ce01176 100644
--- a/net/pkt/pkt_poll.c
+++ b/net/pkt/pkt_poll.c
@@ -103,8 +103,6 @@ void pkt_poll(FAR struct net_driver_s *dev, FAR struct pkt_conn_s *conn)
       /* Setup for the application callback */
 
       dev->d_appdata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPv4UDP_HDRLEN];
-      dev->d_snddata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPv4UDP_HDRLEN];
-
       dev->d_len     = 0;
       dev->d_sndlen  = 0;
 
diff --git a/net/socket/net_sendfile.c b/net/socket/net_sendfile.c
index 17f7b54780..5274eb4ede 100644
--- a/net/socket/net_sendfile.c
+++ b/net/socket/net_sendfile.c
@@ -289,7 +289,7 @@ static uint16_t sendfile_interrupt(FAR struct net_driver_s *dev, FAR void *pvcon
               goto end_wait;
             }
 
-          ret = file_read(pstate->snd_file, dev->d_snddata, sndlen);
+          ret = file_read(pstate->snd_file, dev->d_appdata, sndlen);
           if (ret < 0)
             {
               int errcode = errno;
diff --git a/net/socket/sendto.c b/net/socket/sendto.c
index 7576d74275..1bd9495cf7 100644
--- a/net/socket/sendto.c
+++ b/net/socket/sendto.c
@@ -207,7 +207,7 @@ static uint16_t sendto_interrupt(struct net_driver_s *dev, void *conn,
 
       else
         {
-          /* Copy the user data into d_snddata and send it */
+          /* Copy the user data into d_appdata and send it */
 
           devif_send(dev, pstate->st_buffer, pstate->st_buflen);
           pstate->st_sndlen = pstate->st_buflen;
diff --git a/net/tcp/tcp_appsend.c b/net/tcp/tcp_appsend.c
index 339e2f2558..ad4d43afbc 100644
--- a/net/tcp/tcp_appsend.c
+++ b/net/tcp/tcp_appsend.c
@@ -188,8 +188,6 @@ void tcp_rexmit(FAR struct net_driver_s *dev, FAR struct tcp_conn_s *conn,
   nllvdbg("result: %04x d_sndlen: %d conn->unacked: %d\n",
           result, dev->d_sndlen, conn->unacked);
 
-  dev->d_appdata = dev->d_snddata;
-
   /* If the application has data to be sent, or if the incoming packet had
    * new data in it, we must send out a packet.
    */
diff --git a/net/tcp/tcp_input.c b/net/tcp/tcp_input.c
index f851c67ead..f382e2cc80 100644
--- a/net/tcp/tcp_input.c
+++ b/net/tcp/tcp_input.c
@@ -130,7 +130,6 @@ static void tcp_input(FAR struct net_driver_s *dev, unsigned int iplen)
 
   /* Initialize for tcp_send() */
 
-  dev->d_snddata = &dev->d_buf[hdrlen];
   dev->d_appdata = &dev->d_buf[hdrlen];
 
   /* Start of TCP input header processing code. */
diff --git a/net/tcp/tcp_poll.c b/net/tcp/tcp_poll.c
index 0f61756386..637ac99ac2 100644
--- a/net/tcp/tcp_poll.c
+++ b/net/tcp/tcp_poll.c
@@ -107,10 +107,8 @@ void tcp_poll(FAR struct net_driver_s *dev, FAR struct tcp_conn_s *conn)
        */
 
 #if defined(CONFIG_NET_IPv4)
-      dev->d_snddata = &dev->d_buf[IPv4TCP_HDRLEN + NET_LL_HDRLEN(dev)];
       dev->d_appdata = &dev->d_buf[IPv4TCP_HDRLEN + NET_LL_HDRLEN(dev)];
 #else /* if defined(CONFIG_NET_IPv6) */
-      dev->d_snddata = &dev->d_buf[IPv6TCP_HDRLEN + NET_LL_HDRLEN(dev)];
       dev->d_appdata = &dev->d_buf[IPv6TCP_HDRLEN + NET_LL_HDRLEN(dev)];
 #endif
 
diff --git a/net/tcp/tcp_timer.c b/net/tcp/tcp_timer.c
index 5ed9c8d103..2d1590b7cc 100644
--- a/net/tcp/tcp_timer.c
+++ b/net/tcp/tcp_timer.c
@@ -100,7 +100,6 @@ void tcp_timer(FAR struct net_driver_s *dev, FAR struct tcp_conn_s *conn,
 {
   uint8_t result;
 
-  dev->d_snddata = &dev->d_buf[IPv4TCP_HDRLEN + NET_LL_HDRLEN(dev)];
   dev->d_appdata = &dev->d_buf[IPv4TCP_HDRLEN + NET_LL_HDRLEN(dev)];
 
   /* Increase the TCP sequence number */
diff --git a/net/udp/udp_input.c b/net/udp/udp_input.c
index 9062b6dd52..d21d47e1b5 100644
--- a/net/udp/udp_input.c
+++ b/net/udp/udp_input.c
@@ -167,7 +167,6 @@ static int udp_input(FAR struct net_driver_s *dev, unsigned int iplen)
           /* Set-up for the application callback */
 
           dev->d_appdata = &dev->d_buf[hdrlen];
-          dev->d_snddata = &dev->d_buf[hdrlen];
           dev->d_sndlen  = 0;
 
           /* Perform the application callback */
diff --git a/net/udp/udp_poll.c b/net/udp/udp_poll.c
index 43ea3e8cc1..a734cf93d6 100644
--- a/net/udp/udp_poll.c
+++ b/net/udp/udp_poll.c
@@ -105,10 +105,8 @@ void udp_poll(FAR struct net_driver_s *dev, FAR struct udp_conn_s *conn)
 
 #if defined(CONFIG_NET_IPv4)
       dev->d_appdata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPv4UDP_HDRLEN];
-      dev->d_snddata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPv4UDP_HDRLEN];
 #else /* if defined(CONFIG_NET_IPv6) */
       dev->d_appdata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPv6UDP_HDRLEN];
-      dev->d_snddata = &dev->d_buf[NET_LL_HDRLEN(dev) + IPv6UDP_HDRLEN];
 #endif
 
       dev->d_len     = 0;