diff --git a/libc/private/resolv_private.h b/libc/private/resolv_private.h
index 0f3c6c0..1c3c1a2 100644
--- a/libc/private/resolv_private.h
+++ b/libc/private/resolv_private.h
@@ -56,6 +56,7 @@
 
 #include <resolv.h>
 #include "resolv_static.h"
+#include <net/if.h>
 
 /*
  * Revision information.  This is the release date in YYYYMMDD format.
@@ -139,6 +140,7 @@
 struct __res_state_ext;
 
 struct __res_state {
+	char	iface[IF_NAMESIZE+1];
 	int	retrans;	 	/* retransmission time interval */
 	int	retry;			/* number of times to retransmit */
 #ifdef sun
@@ -491,7 +493,7 @@
 int		res_getservers(res_state,
 				    union res_sockaddr_union *, int);
 
-int res_get_dns_changed();
+void res_setiface();
 u_int  res_randomid(void);
 
 __END_DECLS