diff --git a/net/libreswan/Makefile b/net/libreswan/Makefile
index 2752fd997..ddc930431 100644
--- a/net/libreswan/Makefile
+++ b/net/libreswan/Makefile
@@ -81,6 +81,10 @@ MAKE_FLAGS+= \
     FINALRUNDIR="/var/run/pluto" \
     ARCH="$(LINUX_KARCH)" \
 
+ifdef CONFIG_LINUX_4_14
+	MAKE_FLAGS+= USE_XFRM_INTERFACE_IFLA_HEADER=true
+endif
+
 define Build/Prepare
 	$(call Build/Prepare/Default)
 	$(SED) 's,include $$$$(top_srcdir)/mk/manpages.mk,,g' \