--- /dev/null
+diff -u -r ../mtr-66de3ecbab28b054b868a73fbb57f30549d770ac/net.h ./net.h
+--- ../mtr-66de3ecbab28b054b868a73fbb57f30549d770ac/net.h 2016-05-03 05:01:11.000000000 -0400
++++ ./net.h 2016-06-21 10:03:22.706030491 -0400
+@@ -21,6 +21,7 @@
+ #include <arpa/inet.h>
+ #include <netinet/in.h>
+ #include <sys/socket.h>
++#include <sys/select.h>
+ #ifdef ENABLE_IPV6
+ #include <netinet/ip6.h>
+ #include <netinet/icmp6.h>