diff --git a/arch/sim/src/Makefile b/arch/sim/src/Makefile
index 4507ce60de..0fd5bfea90 100644
--- a/arch/sim/src/Makefile
+++ b/arch/sim/src/Makefile
@@ -98,7 +98,7 @@ ifeq ($(CONFIG_ARCH_ROMGETC),y)
 CSRCS += up_romgetc.c
 endif
 
-ifeq ($(CONFIG_NET),y)
+ifeq ($(CONFIG_NET_ETHERNET),y)
 CSRCS += up_netdriver.c
 HOSTCFLAGS += -DNETDEV_BUFSIZE=$(CONFIG_NET_ETH_MTU)
 ifneq ($(HOSTOS),Cygwin)
diff --git a/include/nuttx/net/netconfig.h b/include/nuttx/net/netconfig.h
index fed4f4adad..58e285b5f0 100644
--- a/include/nuttx/net/netconfig.h
+++ b/include/nuttx/net/netconfig.h
@@ -148,7 +148,7 @@
 #  define MIN_NET_DEV_MTU   CONFIG_NET_SLIP_MTU
 #  define MAX_NET_DEV_MTU   CONFIG_NET_SLIP_MTU
 
-#else /* if defined(CONFIG_NET_ETHERNET) */
+#elif defined(CONFIG_NET_ETHERNET)
    /* Assume standard Ethernet link layer header */
 
 #  define NET_LL_HDRLEN(d)  14
@@ -156,6 +156,14 @@
 #  define MIN_NET_DEV_MTU   CONFIG_NET_ETH_MTU
 #  define MAX_NET_DEV_MTU   CONFIG_NET_ETH_MTU
 
+#else
+  /* Perhaps only Unix domain sockets */
+
+#  define NET_LL_HDRLEN(d)  0
+#  define NET_DEV_MTU(d)    0
+#  define MIN_NET_DEV_MTU   0
+#  define MAX_NET_DEV_MTU   0
+
 #endif /* MULTILINK or SLIP or ETHERNET */
 
 /* Layer 3/4 Configuration Options ******************************************/
diff --git a/net/socket/connect.c b/net/socket/connect.c
index 88535210ac..0cb84177d0 100644
--- a/net/socket/connect.c
+++ b/net/socket/connect.c
@@ -45,6 +45,7 @@
 
 #include <stdint.h>
 #include <errno.h>
+#include <assert.h>
 #include <debug.h>
 
 #include <arch/irq.h>
@@ -461,7 +462,7 @@ int psock_connect(FAR struct socket *psock, FAR const struct sockaddr *addr,
                   socklen_t addrlen)
 {
   FAR const struct sockaddr_in *inaddr = (FAR const struct sockaddr_in *)addr;
-#if defined(CONFIG_NET_TCP) || defined(CONFIG_NET_UDP)
+#if defined(CONFIG_NET_TCP) || defined(CONFIG_NET_UDP) || defined(CONFIG_NET_LOCAL)
   int ret;
 #endif
   int err;