diff --git a/neutron_tempest_plugin/vpnaas/scenario/test_vpnaas.py b/neutron_tempest_plugin/vpnaas/scenario/test_vpnaas.py
index 92eed9e..65e2ddf 100644
--- a/neutron_tempest_plugin/vpnaas/scenario/test_vpnaas.py
+++ b/neutron_tempest_plugin/vpnaas/scenario/test_vpnaas.py
@@ -100,6 +100,13 @@
             cls.extra_subnet_attributes['ipv6_address_mode'] = 'slaac'
             cls.extra_subnet_attributes['ipv6_ra_mode'] = 'slaac'
 
+        left_v4_cidr = netaddr.IPNetwork('10.20.0.0/24')
+        left_v6_cidr = netaddr.IPNetwork('2001:db8:0:2::/64')
+        cls.left_cidr = left_v6_cidr if cls.inner_ipv6 else left_v4_cidr
+        right_v4_cidr = netaddr.IPNetwork('10.10.0.0/24')
+        right_v6_cidr = netaddr.IPNetwork('2001:db8:0:1::/64')
+        cls.right_cidr = right_v6_cidr if cls.inner_ipv6 else right_v4_cidr
+
         # LEFT
         cls.router = cls.create_router(
             data_utils.rand_name('left-router'),
@@ -107,14 +114,22 @@
             external_network_id=CONF.network.public_network_id)
         cls.network = cls.create_network(network_name='left-network')
         ip_version = 6 if cls.inner_ipv6 else 4
-        v4_cidr = netaddr.IPNetwork('10.20.0.0/24')
-        v6_cidr = netaddr.IPNetwork('2001:db8:0:2::/64')
-        cidr = v6_cidr if cls.inner_ipv6 else v4_cidr
-        cls.subnet = cls.create_subnet(
-            cls.network, ip_version=ip_version, cidr=cidr, name='left-subnet',
-            **cls.extra_subnet_attributes)
-        cls.create_router_interface(cls.router['id'], cls.subnet['id'])
+        is_distributed = cls.os_admin.network_client.show_router(
+            cls.router['id'])['router'].get('distributed')
 
+        cls.subnet = cls.create_subnet(
+            cls.network, ip_version=ip_version, cidr=cls.left_cidr,
+            name='left-subnet', **cls.extra_subnet_attributes)
+        cls.create_router_interface(cls.router['id'], cls.subnet['id'])
+        if is_distributed:
+            snat_port = cls.os_admin.network_client.list_ports(
+                device_id=cls.router['id'],
+                device_owner='network:router_centralized_snat')
+            snat_ip = cls._get_ip_on_subnet_for_port(
+                cls, snat_port['ports'][0], cls.subnet['id'])
+            cls.os_admin.network_client.update_subnet(
+                cls.subnet['id'], host_routes=[{"destination": cls.right_cidr,
+                                                "nexthop": snat_ip}])
         # Gives an internal IPv4 subnet for floating IP to the left server,
         # we use it to ssh into the left server.
         if cls.inner_ipv6:
@@ -148,15 +163,23 @@
             data_utils.rand_name('right-router'),
             admin_state_up=True,
             external_network_id=CONF.network.public_network_id)
+        is_distributed = cls.os_admin.network_client.show_router(
+            router['id'])['router'].get('distributed')
         network = cls.create_network(network_name='right-network')
-        v4_cidr = netaddr.IPNetwork('10.10.0.0/24')
-        v6_cidr = netaddr.IPNetwork('2001:db8:0:1::/64')
-        cidr = v6_cidr if cls.inner_ipv6 else v4_cidr
         ip_version = 6 if cls.inner_ipv6 else 4
         subnet = cls.create_subnet(
-            network, ip_version=ip_version, cidr=cidr, name='right-subnet',
-            **cls.extra_subnet_attributes)
+            network, ip_version=ip_version, cidr=cls.right_cidr,
+            name='right-subnet', **cls.extra_subnet_attributes)
         cls.create_router_interface(router['id'], subnet['id'])
+        if is_distributed:
+            snat_port = cls.os_admin.network_client.list_ports(
+                device_id=router['id'],
+                device_owner='network:router_centralized_snat')
+            snat_ip = cls._get_ip_on_subnet_for_port(
+                cls, snat_port['ports'][0], subnet['id'])
+            cls.os_admin.network_client.update_subnet(
+                subnet['id'], host_routes=[{"destination": cls.left_cidr,
+                                            "nexthop": snat_ip}])
 
         return network, subnet, router