diff --git a/neutron/agent/linux/dhcp.py b/neutron/agent/linux/dhcp.py
index 0504fae8d04..5569737bbe1 100644
--- a/neutron/agent/linux/dhcp.py
+++ b/neutron/agent/linux/dhcp.py
@@ -1212,7 +1212,7 @@ class Dnsmasq(DhcpLocalProcess):
                     if subnet_dhcp_ip:
                         metadata_route_ip = subnet_dhcp_ip
 
-                if not isolated_subnets[subnet.id] and gateway:
+                elif not isolated_subnets[subnet.id] and gateway:
                     metadata_route_ip = gateway
 
                 if metadata_route_ip: