https://bugs.gentoo.org/692428
--- a/irdadump/irdadump.c
+++ b/irdadump/irdadump.c
@@ -27,6 +27,7 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <sys/ioctl.h>
+#include <linux/sockios.h> /* SIOCGSTAMP */
 
 #include <net/if_arp.h>
 #include <net/if_packet.h>