gentoo-overlay/net-proxy/dnsproxy/files/dnsproxy-1.16-include.patch

--- a/dnsproxy.c
+++ b/dnsproxy.c
@@ -28,6 +28,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <grp.h> /* setgroups() */
 #include <unistd.h>
 
 #define GLOBALS 1