diff --git a/doc/source/dev/functional-test.rst b/doc/source/dev/functional-test.rst
index 76f2fcf23c..7e7725d74e 100644
--- a/doc/source/dev/functional-test.rst
+++ b/doc/source/dev/functional-test.rst
@@ -39,6 +39,12 @@ If you're using devstack, you can copy and modify the devstack configuration::
     source /opt/stack/devstack/openrc demo demo
     iniset functional_creds.conf auth password $OS_PASSWORD
 
+Set the DNS name server to be used in your bay nodes (e.g. 8.8.8.8)::
+
+    # update DNS name server
+    source /opt/stack/devstack/openrc demo demo
+    iniset functional_creds.conf magnum dns_nameserver <dns-svr-ip-address>
+
 Create the necessary keypair and flavor::
 
     source /opt/stack/devstack/openrc admin admin
diff --git a/magnum/tests/contrib/post_test_hook.sh b/magnum/tests/contrib/post_test_hook.sh
index f20f45c4ba..039f8b7f03 100755
--- a/magnum/tests/contrib/post_test_hook.sh
+++ b/magnum/tests/contrib/post_test_hook.sh
@@ -67,6 +67,7 @@ flavor_id = s1.magnum
 master_flavor_id = m1.magnum
 copy_logs = true
 csr_location = $MAGNUM_DIR/default.csr
+dns_nameserver = 8.8.8.8
 EOF
 
     # Note(eliqiao): Let's keep this only for debugging on gate.
diff --git a/magnum/tests/functional/common/config.py b/magnum/tests/functional/common/config.py
index 539c6bf8fc..fbafa7d6d2 100644
--- a/magnum/tests/functional/common/config.py
+++ b/magnum/tests/functional/common/config.py
@@ -103,6 +103,12 @@ class Config(object):
             raise Exception('config missing csr_location key')
         cls.csr_location = CONF.magnum.csr_location
 
+    @classmethod
+    def set_dns_nameserver(cls, config):
+        if 'dns_nameserver' not in CONF.magnum:
+            raise Exception('config missing dns_nameserver')
+        cls.dns_nameserver = CONF.magnum.dns_nameserver
+
     @classmethod
     def set_copy_logs(cls, config):
         if 'copy_logs' not in CONF.magnum:
@@ -125,4 +131,5 @@ class Config(object):
         cls.set_magnum_url(config)
         cls.set_master_flavor_id(config)
         cls.set_csr_location(config)
+        cls.set_dns_nameserver(config)
         cls.set_copy_logs(config)
diff --git a/magnum/tests/functional/common/datagen.py b/magnum/tests/functional/common/datagen.py
index f8506e8a15..8eb3f2a821 100644
--- a/magnum/tests/functional/common/datagen.py
+++ b/magnum/tests/functional/common/datagen.py
@@ -203,7 +203,7 @@ def valid_swarm_baymodel():
     return baymodel_data(image_id=config.Config.image_id,
                          fixed_network="192.168.0.0/24",
                          flavor_id=config.Config.flavor_id, public=False,
-                         dns_nameserver="8.8.8.8",
+                         dns_nameserver=config.Config.dns_nameserver,
                          master_flavor_id=config.Config.master_flavor_id,
                          keypair_id=config.Config.keypair_id, coe="swarm",
                          docker_volume_size=3, cluster_distro=None,
diff --git a/magnum/tests/functional/python_client_base.py b/magnum/tests/functional/python_client_base.py
index 06087f648b..df2164f94f 100644
--- a/magnum/tests/functional/python_client_base.py
+++ b/magnum/tests/functional/python_client_base.py
@@ -54,6 +54,7 @@ class BaseMagnumClient(base.BaseMagnumTest):
         flavor_id = cliutils.env('FLAVOR_ID')
         master_flavor_id = cliutils.env('MASTER_FLAVOR_ID')
         keypair_id = cliutils.env('KEYPAIR_ID')
+        dns_nameserver = cliutils.env('DNS_NAMESERVER')
         copy_logs = cliutils.env('COPY_LOGS')
 
         config = configparser.RawConfigParser()
@@ -71,6 +72,8 @@ class BaseMagnumClient(base.BaseMagnumTest):
             master_flavor_id = master_flavor_id or config.get(
                 'magnum', 'master_flavor_id')
             keypair_id = keypair_id or config.get('magnum', 'keypair_id')
+            dns_nameserver = dns_nameserver or config.get(
+                'magnum', 'dns_nameserver')
             try:
                 copy_logs = copy_logs or config.get('magnum', 'copy_logs')
             except configparser.NoOptionError:
@@ -81,6 +84,7 @@ class BaseMagnumClient(base.BaseMagnumTest):
         cls.flavor_id = flavor_id
         cls.master_flavor_id = master_flavor_id
         cls.keypair_id = keypair_id
+        cls.dns_nameserver = dns_nameserver
         cls.copy_logs = bool(copy_logs)
         cls.cs = v1client.Client(username=user,
                                  api_key=passwd,
@@ -132,6 +136,7 @@ class BaseMagnumClient(base.BaseMagnumTest):
             docker_volume_size=docker_volume_size,
             network_driver=network_driver,
             volume_driver=volume_driver,
+            dns_nameserver=cls.dns_nameserver,
             coe=coe,
             labels=labels,
             tls_disabled=tls_disabled,
diff --git a/magnum/tests/functional/swarm/test_swarm_python_client.py b/magnum/tests/functional/swarm/test_swarm_python_client.py
index 0176b4688f..bc111351ef 100644
--- a/magnum/tests/functional/swarm/test_swarm_python_client.py
+++ b/magnum/tests/functional/swarm/test_swarm_python_client.py
@@ -39,7 +39,6 @@ class TestSwarmAPIs(BayTest):
         "network_driver": None,
         "volume_driver": None,
         "fixed_network": '192.168.0.0/24',
-        "dns_nameserver": '8.8.8.8',
         "labels": {}
     }
 
diff --git a/magnum/tests/functional/tempest_tests/config.py b/magnum/tests/functional/tempest_tests/config.py
index d38ce185d0..bb29a4be25 100644
--- a/magnum/tests/functional/tempest_tests/config.py
+++ b/magnum/tests/functional/tempest_tests/config.py
@@ -56,6 +56,10 @@ MagnumGroup = [
                default="/opt/stack/new/magnum/default.csr",
                help="CSR location for certificates."),
 
+    cfg.StrOpt("dns_nameserver",
+               default="8.8.8.8",
+               help="DNS nameserver to use for baymodels."),
+
     cfg.StrOpt("copy_logs",
                default=True,
                help="Specify whether to copy nova server logs on failure."),