1 files changed, 9 insertions, 0 deletions
diff --git a/nest/iface.h b/nest/iface.h
index a982c17f..b7c3c19c 100644
--- a/nest/iface.h
+++ b/nest/iface.h
@@ -82,6 +82,15 @@ struct iface *if_find_by_index(unsigned);
 struct iface *if_find_by_name(char *);
 void ifa_recalc_all_primary_addresses(void);
 
+static inline int
+ifa_match_addr(struct ifa *ifa, ip_addr addr)
+{
+  if (ifa->flags & IA_UNNUMBERED)
+    return ipa_equal(addr, ifa->opposite);
+  else
+    return ipa_in_net(addr, ifa->prefix, ifa->pxlen);
+}
+
 /* The Neighbor Cache */
 
 typedef struct neighbor {