1 files changed, 19 insertions, 0 deletions
diff --git a/inany.c b/inany.c
index 87a4d8b..543b60d 100644
--- a/inany.c
+++ b/inany.c
@@ -21,6 +21,25 @@
 const union inany_addr inany_loopback4 = INANY_INIT4(IN4ADDR_LOOPBACK_INIT);
 const union inany_addr inany_any4 = INANY_INIT4(IN4ADDR_ANY_INIT);
 
+/** inany_matches - Do two addresses match?
+ * @a, @b:	IPv[46] addresses (NULL for 0.0.0.0 & ::)
+ *
+ * Return: true if they match, false otherwise
+ *
+ * Addresses match themselves, but also unspecified addresses of the same
+ * family.
+ */
+bool inany_matches(const union inany_addr *a, const union inany_addr *b)
+{
+	if (!a || !b)
+		return true;
+
+	if (inany_is_unspecified(a) || inany_is_unspecified(b))
+		return !!inany_v4(a) == !!inany_v4(b);
+
+	return inany_equals(a, b);
+}
+
 /** inany_ntop - Convert an IPv[46] address to text format
  * @src:	IPv[46] address (NULL for unspecified)
  * @dst:	output buffer, minimum INANY_ADDRSTRLEN bytes