https://bugs.gentoo.org/425770

--- a/src/racoon/pfkey.c
+++ b/src/racoon/pfkey.c
@@ -59,7 +59,6 @@
 #include <sys/param.h>
 #include <sys/socket.h>
 #include <sys/queue.h>
-#include <sys/sysctl.h>
 
 #include <net/route.h>
 #include <net/pfkeyv2.h>
--- a/src/setkey/setkey.c
+++ b/src/setkey/setkey.c
@@ -40,7 +40,6 @@
 #include <sys/socket.h>
 #include <sys/time.h>
 #include <sys/stat.h>
-#include <sys/sysctl.h>
 #include <err.h>
 #include <netinet/in.h>
 #include <net/pfkeyv2.h>