--- origsrc/unbound-1.6.2/libunbound/libunbound.c	2017-04-06 08:13:06.000000000 -0500
+++ src/unbound-1.6.2/libunbound/libunbound.c	2017-05-02 10:21:56.184047100 -0500
@@ -73,7 +73,7 @@
 #include <time.h>
 #endif
 
-#if defined(UB_ON_WINDOWS) && defined (HAVE_WINDOWS_H)
+#if defined(UB_ON_WINDOWS) && defined (HAVE_WINDOWS_H) || defined(__CYGWIN__)
 #include <windows.h>
 #include <iphlpapi.h>
 #endif /* UB_ON_WINDOWS */
@@ -1051,9 +1051,11 @@ ub_ctx_resolvconf(struct ub_ctx* ctx, co
 	int r;
 
 	if(fname == NULL) {
-#if !defined(UB_ON_WINDOWS) || !defined(HAVE_WINDOWS_H)
 		fname = "/etc/resolv.conf";
-#else
+	}
+	in = fopen(fname, "r");
+	if(!in) {
+#if defined(UB_ON_WINDOWS) || defined(HAVE_WINDOWS_H) || defined(__CYGWIN__)
 		FIXED_INFO *info;
 		ULONG buflen = sizeof(*info);
 		IP_ADDR_STRING *ptr;
@@ -1087,11 +1089,7 @@ ub_ctx_resolvconf(struct ub_ctx* ctx, co
 			return UB_NOERROR;
 		}
 		free(info);
-		return UB_READFILE;
-#endif /* WINDOWS */
-	}
-	in = fopen(fname, "r");
-	if(!in) {
+#endif
 		/* error in errno! perror(fname) */
 		return UB_READFILE;
 	}