diff --git a/apps/nshlib/nsh.h b/apps/nshlib/nsh.h
index 1bd41f319..eccf5c23d 100644
--- a/apps/nshlib/nsh.h
+++ b/apps/nshlib/nsh.h
@@ -154,6 +154,22 @@
 #  define CONFIG_NSH_NETINIT_THREAD_PRIORITY 100
 #endif
 
+/* Some networking commands do not make sense unless there is a network
+ * device.  There might not be a network device if, for example, only Unix
+ * domain sockets were enable.
+ */
+
+#if !defined(CONFIG_NET_ETHERNET) && !defined(CONFIG_NET_SLIP)
+  /* No link layer protocol is a good indication that there is no network
+   * device.
+   */
+
+#  undef CONFIG_NSH_DISABLE_IFUPDOWN
+#  undef CONFIG_NSH_DISABLE_IFCONFIG
+#  define CONFIG_NSH_DISABLE_IFUPDOWN 1
+#  define CONFIG_NSH_DISABLE_IFCONFIG 1
+#endif
+
 /* Telnetd requires networking support */
 
 #ifndef CONFIG_NET
diff --git a/nuttx/net/netdev/netdev_register.c b/nuttx/net/netdev/netdev_register.c
index 464eef16c..a1f5c1251 100644
--- a/nuttx/net/netdev/netdev_register.c
+++ b/nuttx/net/netdev/netdev_register.c
@@ -65,7 +65,7 @@
 
 #if defined(CONFIG_NET_SLIP)
 #  define NETDEV_DEFAULT_FORMAT NETDEV_SLIP_FORMAT
-#else /* `if defined(CONFIG_NET_ETHERNET) */
+#else /* if defined(CONFIG_NET_ETHERNET) */
 #  define NETDEV_DEFAULT_FORMAT NETDEV_ETH_FORMAT
 #endif