diff --git a/boards/sim/sim/sim/configs/lua/defconfig b/boards/sim/sim/sim/configs/lua/defconfig
index 7dc662ea2a..726bf1d578 100644
--- a/boards/sim/sim/sim/configs/lua/defconfig
+++ b/boards/sim/sim/sim/configs/lua/defconfig
@@ -37,16 +37,23 @@ CONFIG_IDLETHREAD_STACKSIZE=4096
 CONFIG_INIT_ENTRYPOINT="nsh_main"
 CONFIG_INTERPRETERS_LUA=y
 CONFIG_LIBC_ENVPATH=y
+CONFIG_LIBC_EXECFUNCS=y
 CONFIG_LIBC_FLOATINGPOINT=y
 CONFIG_LIBC_LOCALE_CATALOG=y
 CONFIG_LIBC_LOCALE_GETTEXT=y
 CONFIG_LIBC_MAX_EXITFUNS=1
+CONFIG_LIBC_NETDB=y
 CONFIG_LIBM=y
 CONFIG_LIBUV=y
 CONFIG_LUA_CJSON_MODULE=y
 CONFIG_LUA_LFS_MODULE=y
 CONFIG_LUA_LSYSLOG_MODULE=y
 CONFIG_LUA_LUV_MODULE=y
+CONFIG_NET=y
+CONFIG_NETDEV_IFINDEX=y
+CONFIG_NET_SOCKOPTS=y
+CONFIG_NET_TCP=y
+CONFIG_NET_UDP=y
 CONFIG_NSH_ARCHINIT=y
 CONFIG_NSH_BUILTIN_APPS=y
 CONFIG_NSH_FILE_APPS=y
@@ -54,8 +61,10 @@ CONFIG_NSH_READLINE=y
 CONFIG_PATH_INITIAL="/bin"
 CONFIG_PIPES=y
 CONFIG_PSEUDOFS_ATTRIBUTES=y
+CONFIG_PSEUDOFS_SOFTLINKS=y
 CONFIG_READLINE_CMD_HISTORY=y
 CONFIG_READLINE_TABCOMPLETION=y
+CONFIG_SCHED_HAVE_PARENT=y
 CONFIG_SERIAL_TERMIOS=y
 CONFIG_SIG_DEFAULT=y
 CONFIG_START_MONTH=6