$NetBSD: patch-ac,v 1.3 2001/01/28 06:50:22 itojun Exp $
support for kame scopeid extension (assumes that link scope = interface)

--- lib/lwres/getaddrinfo.c-	Sun Jan 28 15:34:17 2001
+++ lib/lwres/getaddrinfo.c	Sun Jan 28 15:38:37 2001
@@ -28,6 +28,9 @@
 #include <sys/un.h>
 
 #include <netinet/in.h>
+#ifdef __KAME__
+#include <net/if.h>
+#endif
 
 #include <arpa/nameser.h>
 #include <arpa/inet.h>
@@ -262,14 +265,18 @@
 			p = strchr(ntmp, '%');
 			ep = NULL;
 
-			/*
-			 * Vendors may want to support non-numeric
-			 * scopeid around here.
-			 */
+#ifdef __KAME__
+			if (p != NULL) {
+				scopeid = if_nametoindex(p + 1);
+				if (scopeid)
+					p = NULL;
+			}
+#endif
 
-			if (p != NULL)
+			if (p != NULL) {
 				scopeid = (lwres_uint32_t)strtoul(p + 1,
 								  &ep, 10);
+			}
 			if (p != NULL && ep != NULL && ep[0] == '\0')
 				*p = '\0';
 			else {