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>