diff --git a/oslo_utils/netutils.py b/oslo_utils/netutils.py
index eae0d87c..3e3deaf6 100644
--- a/oslo_utils/netutils.py
+++ b/oslo_utils/netutils.py
@@ -137,6 +137,22 @@ def is_valid_cidr(address):
     return True
 
 
+def is_valid_ipv6_cidr(address):
+    """Verify that address represents a valid IPv6 CIDR address.
+
+    :param address: address to verify
+    :type address: string
+    :returns: true if address is valid, false otherwise
+
+    .. versionadded:: 3.17
+    """
+    try:
+        netaddr.IPNetwork(address, version=6).cidr
+        return True
+    except (TypeError, netaddr.AddrFormatError):
+        return False
+
+
 def get_ipv6_addr_by_EUI64(prefix, mac):
     """Calculate IPv6 address using EUI-64 specification.
 
diff --git a/oslo_utils/tests/test_netutils.py b/oslo_utils/tests/test_netutils.py
index 9a4a3594..3678bcf8 100644
--- a/oslo_utils/tests/test_netutils.py
+++ b/oslo_utils/tests/test_netutils.py
@@ -191,6 +191,17 @@ class NetworkUtilsTest(test_base.BaseTestCase):
         self.assertFalse(netutils.is_valid_cidr('10.0.0.1/33'))
         self.assertFalse(netutils.is_valid_cidr(10))
 
+    def test_is_valid_ipv6_cidr(self):
+        self.assertTrue(netutils.is_valid_ipv6_cidr("2600::/64"))
+        self.assertTrue(netutils.is_valid_ipv6_cidr(
+            "abcd:ef01:2345:6789:abcd:ef01:192.168.254.254/48"))
+        self.assertTrue(netutils.is_valid_ipv6_cidr(
+            "0000:0000:0000:0000:0000:0000:0000:0001/32"))
+        self.assertTrue(netutils.is_valid_ipv6_cidr(
+            "0000:0000:0000:0000:0000:0000:0000:0001"))
+        self.assertFalse(netutils.is_valid_ipv6_cidr("foo"))
+        self.assertFalse(netutils.is_valid_ipv6_cidr("127.0.0.1"))
+
     def test_valid_port(self):
         valid_inputs = [0, '0', 1, '1', 2, '3', '5', 8, 13, 21,
                         '80', '3246', '65535']