diff --git a/arch/arm/src/common/up_initialize.c b/arch/arm/src/common/up_initialize.c
index cad12d23077..71c33313453 100644
--- a/arch/arm/src/common/up_initialize.c
+++ b/arch/arm/src/common/up_initialize.c
@@ -44,6 +44,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/board.h>
 #include <nuttx/fs/fs.h>
+#include <nuttx/net/loopback.h>
 #include <nuttx/syslog/ramlog.h>
 #include <nuttx/syslog/syslog_console.h>
 #include <nuttx/crypto/crypto.h>
@@ -254,6 +255,12 @@ void up_initialize(void)
   up_netinitialize();
 #endif
 
+#ifdef CONFIG_NETDEV_LOOPBACK
+  /* Initialize the local loopback device */
+
+  (void)localhost_initialize();
+#endif
+
   /* Initialize USB -- device and/or host */
 
   up_usbinitialize();
diff --git a/arch/avr/src/common/up_initialize.c b/arch/avr/src/common/up_initialize.c
index 5fb247847c1..0e8499c99d0 100644
--- a/arch/avr/src/common/up_initialize.c
+++ b/arch/avr/src/common/up_initialize.c
@@ -43,6 +43,7 @@
 
 #include <nuttx/arch.h>
 #include <nuttx/fs/fs.h>
+#include <nuttx/net/loopback.h>
 #include <nuttx/syslog/ramlog.h>
 #include <nuttx/syslog/syslog_console.h>
 
@@ -268,6 +269,12 @@ void up_initialize(void)
   up_netinitialize();
 #endif
 
+#ifdef CONFIG_NETDEV_LOOPBACK
+  /* Initialize the local loopback device */
+
+  (void)localhost_initialize();
+#endif
+
   /* Initialize USB */
 
   up_usbinitialize();
diff --git a/arch/hc/src/common/up_initialize.c b/arch/hc/src/common/up_initialize.c
index f22be91528a..2e947c3ef79 100644
--- a/arch/hc/src/common/up_initialize.c
+++ b/arch/hc/src/common/up_initialize.c
@@ -44,6 +44,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/board.h>
 #include <nuttx/fs/fs.h>
+#include <nuttx/net/loopback.h>
 #include <nuttx/syslog/ramlog.h>
 #include <nuttx/syslog/syslog_console.h>
 
@@ -192,6 +193,12 @@ void up_initialize(void)
   up_netinitialize();
 #endif
 
+#ifdef CONFIG_NETDEV_LOOPBACK
+  /* Initialize the local loopback device */
+
+  (void)localhost_initialize();
+#endif
+
   /* Initialize USB */
 
   up_usbinitialize();
diff --git a/arch/mips/src/common/up_initialize.c b/arch/mips/src/common/up_initialize.c
index cfe893e7959..c06b01e9908 100644
--- a/arch/mips/src/common/up_initialize.c
+++ b/arch/mips/src/common/up_initialize.c
@@ -44,6 +44,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/board.h>
 #include <nuttx/fs/fs.h>
+#include <nuttx/net/loopback.h>
 #include <nuttx/syslog/ramlog.h>
 #include <nuttx/syslog/syslog_console.h>
 
@@ -194,6 +195,12 @@ void up_initialize(void)
   up_netinitialize();
 #endif
 
+#ifdef CONFIG_NETDEV_LOOPBACK
+  /* Initialize the local loopback device */
+
+  (void)localhost_initialize();
+#endif
+
   /* Initialize USB -- device and/or host */
 
   up_usbinitialize();
diff --git a/arch/sh/src/common/up_initialize.c b/arch/sh/src/common/up_initialize.c
index e7f0fbd5957..0224bce01c3 100644
--- a/arch/sh/src/common/up_initialize.c
+++ b/arch/sh/src/common/up_initialize.c
@@ -44,6 +44,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/board.h>
 #include <nuttx/fs/fs.h>
+#include <nuttx/net/loopback.h>
 #include <nuttx/syslog/ramlog.h>
 #include <nuttx/syslog/syslog_console.h>
 
@@ -182,6 +183,12 @@ void up_initialize(void)
   up_netinitialize();
 #endif
 
+#ifdef CONFIG_NETDEV_LOOPBACK
+  /* Initialize the local loopback device */
+
+  (void)localhost_initialize();
+#endif
+
   /* Initialize USB */
 
   up_usbinitialize();
diff --git a/arch/sim/src/up_appinit.c b/arch/sim/src/up_appinit.c
index fbbc2f8a95b..ddaf0886395 100644
--- a/arch/sim/src/up_appinit.c
+++ b/arch/sim/src/up_appinit.c
@@ -42,7 +42,6 @@
 #include <debug.h>
 
 #include <nuttx/board.h>
-#include <nuttx/net/loopback.h>
 
 /***************************************************************************
  * Public Functions
@@ -61,19 +60,6 @@
 #ifdef CONFIG_LIB_BOARDCTL
 int board_app_initialize(void)
 {
-#ifdef CONFIG_NETDEV_LOOPBACK
-  int ret;
-
-  /* Initialize the local loopback device */
-
-  ret = localhost_initialize();
-  if (ret < 0)
-    {
-      ndbg("ERROR: localhost_initialize() failed: %d\n", ret);
-    }
-
-#endif /* CONFIG_NETDEV_LOOPBACK */
-
   return 0;
 }
 #endif /* CONFIG_LIB_BOARDCTL */
diff --git a/arch/sim/src/up_initialize.c b/arch/sim/src/up_initialize.c
index d61e84aa23c..24aaa49dbd3 100644
--- a/arch/sim/src/up_initialize.c
+++ b/arch/sim/src/up_initialize.c
@@ -44,6 +44,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/fs/fs.h>
 #include <nuttx/fs/ioctl.h>
+#include <nuttx/net/loopback.h>
 #include <nuttx/mtd/mtd.h>
 #include <nuttx/syslog/ramlog.h>
 #include <nuttx/syslog/syslog_console.h>
@@ -165,6 +166,12 @@ void up_initialize(void)
   netdriver_init();         /* Our "real" network driver */
 #endif
 
+#ifdef CONFIG_NETDEV_LOOPBACK
+  /* Initialize the local loopback device */
+
+  (void)localhost_initialize();
+#endif
+
 #if defined(CONFIG_FS_SMARTFS) && defined(CONFIG_SIM_SPIFLASH)
   up_init_smartfs();
 #endif
diff --git a/arch/x86/src/common/up_initialize.c b/arch/x86/src/common/up_initialize.c
index 9356dd8cd1d..76f1621c5d8 100644
--- a/arch/x86/src/common/up_initialize.c
+++ b/arch/x86/src/common/up_initialize.c
@@ -44,6 +44,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/board.h>
 #include <nuttx/fs/fs.h>
+#include <nuttx/net/loopback.h>
 #include <nuttx/syslog/ramlog.h>
 #include <nuttx/syslog/syslog_console.h>
 
@@ -194,6 +195,12 @@ void up_initialize(void)
   up_netinitialize();
 #endif
 
+#ifdef CONFIG_NETDEV_LOOPBACK
+  /* Initialize the local loopback device */
+
+  (void)localhost_initialize();
+#endif
+
   /* Initialize USB -- device and/or host */
 
   up_usbinitialize();
diff --git a/arch/z16/src/common/up_initialize.c b/arch/z16/src/common/up_initialize.c
index e906731d954..9a7710755da 100644
--- a/arch/z16/src/common/up_initialize.c
+++ b/arch/z16/src/common/up_initialize.c
@@ -44,6 +44,7 @@
 #include <nuttx/arch.h>
 #include <nuttx/board.h>
 #include <nuttx/fs/fs.h>
+#include <nuttx/net/loopback.h>
 #include <nuttx/syslog/ramlog.h>
 #include <nuttx/syslog/syslog_console.h>
 
@@ -198,5 +199,11 @@ void up_initialize(void)
   up_netinitialize();
 #endif
 
+#ifdef CONFIG_NETDEV_LOOPBACK
+  /* Initialize the local loopback device */
+
+  (void)localhost_initialize();
+#endif
+
   board_led_on(LED_IRQSENABLED);
 }