Fixed ansible.utils.ipaddr('host/prefix') function if size of subnet is 1

plugins/plugin_utils/base/ipaddr_utils.py

@@ -100,6 +100,15 @@ def _ip_query(v):
 
 
 def _address_prefix_query(v):
+    # Handle single IP address case
+    if v.size == 1:
+        # For IPv4, return False for a single IP without a /32 prefix
+        if v.version == 4 and v.prefixlen != 32:
+            return False
+        # For IPv6, return False for a single IP without a /128 prefix
+        if v.version == 6 and v.prefixlen != 128:
+            return False
+
     if v.size > 2 and v.ip in (v.network, v.broadcast):
         return False
     return str(v.ip) + "/" + str(v.prefixlen)

tests/unit/plugins/filter/test_ipaddr.py

@@ -270,6 +270,22 @@ def test_range_usable(self):
         self.assertEqual(ipaddr(address, "range_usable"), "1.12.1.1-1.12.1.254")
 
     def test_address_prefix(self):
+        # Single IP address without a prefix, should return empty
+        address = "203.0.113.23"
+        self.assertFalse(ipaddr(address, "address/prefix"))
+
+        # Single IP address with /32, should return address with /32
+        address_with_prefix = "203.0.113.23/32"
+        self.assertEqual(ipaddr(address_with_prefix, "address/prefix"), address_with_prefix)
+
+        # Valid /24 network range, should return the address and prefix
+        network_address = "203.0.113.0/24"
+        self.assertEqual(ipaddr(network_address, "address/prefix"), network_address)
+
+        # Broadcast address of /24, should return False
+        broadcast_address = "203.0.113.255/24"
+        self.assertFalse(ipaddr(broadcast_address, "address/prefix"))
+
         # Regular address
         address = "1.12.1.12/24"
         self.assertEqual(ipaddr(address, "address/prefix"), address)