diff --git a/boards/sim/sim/sim/configs/ipforward/defconfig b/boards/sim/sim/sim/configs/ipforward/defconfig
index 45b9526a94..5e76c4fb18 100644
--- a/boards/sim/sim/sim/configs/ipforward/defconfig
+++ b/boards/sim/sim/sim/configs/ipforward/defconfig
@@ -9,6 +9,7 @@
 # CONFIG_NET_IPv4 is not set
 # CONFIG_NSH_CMDOPT_HEXDUMP is not set
 # CONFIG_NSH_NETINIT is not set
+CONFIG_ALLOW_BSD_COMPONENTS=y
 CONFIG_ARCH="sim"
 CONFIG_ARCH_BOARD="sim"
 CONFIG_ARCH_BOARD_SIM=y