diff --git a/libdnet-stripped/include/dnet/intf.h b/libdnet-stripped/include/dnet/intf.h
index 3d1939f12..ae54861dc 100644
--- a/libdnet-stripped/include/dnet/intf.h
+++ b/libdnet-stripped/include/dnet/intf.h
@@ -58,6 +58,7 @@ typedef int (*intf_handler)(const struct intf_entry *entry, void *arg);
 __BEGIN_DECLS
 intf_t	*intf_open(void);
 int	 intf_get(intf_t *i, struct intf_entry *entry);
+int	 intf_get_index(intf_t *intf, struct intf_entry *entry, int af, unsigned int index);
 int	 intf_get_src(intf_t *i, struct intf_entry *entry, struct addr *src);
 int	 intf_get_dst(intf_t *i, struct intf_entry *entry, struct addr *dst);
 int	 intf_get_pcap_devname(const char *intf_name, char *pcapdev, int pcapdevlen);
diff --git a/libdnet-stripped/src/intf-win32.c b/libdnet-stripped/src/intf-win32.c
index 2c5e2f497..fc2644732 100644
--- a/libdnet-stripped/src/intf-win32.c
+++ b/libdnet-stripped/src/intf-win32.c
@@ -257,6 +257,21 @@ _find_adapter_address(intf_t *intf, const char *device)
 	return NULL;
 }
 
+static IP_ADAPTER_ADDRESSES *
+_find_adapter_address_by_index(intf_t *intf, int af, unsigned int index)
+{
+	IP_ADAPTER_ADDRESSES *a;
+
+	for (a = intf->iftable; a != NULL; a = a->Next) {
+		if (af == AF_INET && index == a->IfIndex)
+			return a;
+		if (af == AF_INET6 && index == a->Ipv6IfIndex)
+			return a;
+	}
+
+	return NULL;
+}
+
 intf_t *
 intf_open(void)
 {
@@ -280,6 +295,24 @@ intf_get(intf_t *intf, struct intf_entry *entry)
 	return (0);
 }
 
+/* Look up an interface from an index, such as a sockaddr_in6.sin6_scope_id. */
+int
+intf_get_index(intf_t *intf, struct intf_entry *entry, int af, unsigned int index)
+{
+	IP_ADAPTER_ADDRESSES *a;
+
+	if (_refresh_tables(intf) < 0)
+		return (-1);
+
+	a = _find_adapter_address_by_index(intf, af, index);
+	if (a == NULL)
+		return (-1);
+
+	_adapter_address_to_entry(intf, a, entry);
+
+	return (0);
+}
+
 int
 intf_get_src(intf_t *intf, struct intf_entry *entry, struct addr *src)
 {
diff --git a/libdnet-stripped/src/intf.c b/libdnet-stripped/src/intf.c
index 57b14eed3..93e7b00cf 100644
--- a/libdnet-stripped/src/intf.c
+++ b/libdnet-stripped/src/intf.c
@@ -590,6 +590,21 @@ intf_get(intf_t *intf, struct intf_entry *entry)
 	return (_intf_get_aliases(intf, entry));
 }
 
+/* Look up an interface from an index, such as a sockaddr_in6.sin6_scope_id. */
+int
+intf_get_index(intf_t *intf, struct intf_entry *entry, int af, unsigned int index)
+{
+	char namebuf[IFNAMSIZ];
+	char *devname;
+
+	/* af is ignored; only used in intf-win32.c. */
+	devname = if_indextoname(index, namebuf);
+	if (devname == NULL)
+		return (-1);
+	strlcpy(entry->intf_name, devname, sizeof(entry->intf_name));
+	return intf_get(intf, entry);
+}
+
 static int
 _match_intf_src(const struct intf_entry *entry, void *arg)
 {