diff --git a/nova/tests/unit/virt/libvirt/storage/test_rbd.py b/nova/tests/unit/virt/libvirt/storage/test_rbd.py
index e5489c5ce5dd..2b22d5286213 100644
--- a/nova/tests/unit/virt/libvirt/storage/test_rbd.py
+++ b/nova/tests/unit/virt/libvirt/storage/test_rbd.py
@@ -239,6 +239,14 @@ class RbdTestCase(test.NoDBTestCase):
         ports = ['6789', '6790', '6791', '6792', '6791']
         self.assertEqual((hosts, ports), self.driver.get_mon_addrs())
 
+    @mock.patch('oslo_concurrency.processutils.execute')
+    def test_get_mon_addrs_with_brackets(self, mock_execute):
+        mock_execute.return_value = (CEPH_MON_DUMP, '')
+        hosts = ['[::1]', '[::1]', '[::1]', '127.0.0.1', 'example.com']
+        ports = ['6789', '6790', '6791', '6792', '6791']
+        self.assertEqual((hosts, ports),
+                         self.driver.get_mon_addrs(strip_brackets=False))
+
     @mock.patch.object(rbd_utils.RBDDriver, '_connect_to_rados')
     def test_rbd_conf_features(self, mock_connect):
         self.mock_rbd.RBD_FEATURE_LAYERING = 1
diff --git a/nova/tests/unit/virt/libvirt/test_imagebackend.py b/nova/tests/unit/virt/libvirt/test_imagebackend.py
index cebeb5eb0017..82428dc2cacc 100644
--- a/nova/tests/unit/virt/libvirt/test_imagebackend.py
+++ b/nova/tests/unit/virt/libvirt/test_imagebackend.py
@@ -1561,9 +1561,14 @@ class RbdTestCase(_ImageTestCase, test.NoDBTestCase):
         self.flags(rbd_secret_uuid="3306a5c4-8378-4b3c-aa1f-7b48d3a26172",
                    group='libvirt')
 
-        def get_mon_addrs():
-            hosts = ["server1", "server2"]
-            ports = ["1899", "1920"]
+        # image.get_model() should  always pass strip_brackets=False
+        # for building proper IPv6 address+ports for libguestfs
+        def get_mon_addrs(strip_brackets=True):
+            if strip_brackets:
+                hosts = ["server1", "server2", "::1"]
+            else:
+                hosts = ["server1", "server2", "[::1]"]
+            ports = ["1899", "1920", "1930"]
             return hosts, ports
         mock_mon_addrs.side_effect = get_mon_addrs
 
@@ -1574,7 +1579,7 @@ class RbdTestCase(_ImageTestCase, test.NoDBTestCase):
             "FakePool",
             "FakeUser",
             b"MTIzNDU2Cg==",
-            ["server1:1899", "server2:1920"]),
+            ["server1:1899", "server2:1920", "[::1]:1930"]),
                          model)
 
     @mock.patch.object(rbd_utils.RBDDriver, 'flatten')
diff --git a/nova/virt/libvirt/imagebackend.py b/nova/virt/libvirt/imagebackend.py
index 4e59279ac068..c8c7b9ad3b3f 100644
--- a/nova/virt/libvirt/imagebackend.py
+++ b/nova/virt/libvirt/imagebackend.py
@@ -989,7 +989,10 @@ class Rbd(Image):
                 CONF.libvirt.rbd_secret_uuid)
             secret = base64.b64encode(secretobj.value())
 
-        hosts, ports = self.driver.get_mon_addrs()
+        # Brackets are stripped from IPv6 addresses normally for libvirt XML,
+        # but the servers list is for libguestfs, which needs the brackets
+        # so the joined string is similar to '[::1]:6789'
+        hosts, ports = self.driver.get_mon_addrs(strip_brackets=False)
         servers = [str(':'.join(k)) for k in zip(hosts, ports)]
 
         return imgmodel.RBDImage(self.rbd_name,
diff --git a/nova/virt/libvirt/storage/rbd_utils.py b/nova/virt/libvirt/storage/rbd_utils.py
index 782a969a5a7a..35316f5c4d22 100644
--- a/nova/virt/libvirt/storage/rbd_utils.py
+++ b/nova/virt/libvirt/storage/rbd_utils.py
@@ -164,7 +164,7 @@ class RBDDriver(object):
             args.extend(['--conf', self.ceph_conf])
         return args
 
-    def get_mon_addrs(self):
+    def get_mon_addrs(self, strip_brackets=True):
         args = ['ceph', 'mon', 'dump', '--format=json'] + self.ceph_args()
         out, _ = processutils.execute(*args)
         lines = out.split('\n')
@@ -177,7 +177,9 @@ class RBDDriver(object):
         for addr in addrs:
             host_port = addr[:addr.rindex('/')]
             host, port = host_port.rsplit(':', 1)
-            hosts.append(host.strip('[]'))
+            if strip_brackets:
+                host = host.strip('[]')
+            hosts.append(host)
             ports.append(port)
         return hosts, ports