diff --git a/neutron/agent/linux/dhcp.py b/neutron/agent/linux/dhcp.py
index 462899777fb..dc25ca514f5 100644
--- a/neutron/agent/linux/dhcp.py
+++ b/neutron/agent/linux/dhcp.py
@@ -1021,7 +1021,7 @@ class Dnsmasq(DhcpLocalProcess):
                     if (s.ip_version == 4 and
                             s.cidr != subnet.cidr and
                             sub_segment_id == segment_id):
-                        host_routes.append("%s,0.0.0.0" % s.cidr)
+                        host_routes.insert(0, "%s,0.0.0.0" % s.cidr)
 
                 if host_routes:
                     if gateway:
diff --git a/neutron/tests/unit/agent/linux/test_dhcp.py b/neutron/tests/unit/agent/linux/test_dhcp.py
index 6b21526eb74..1285e5b790c 100644
--- a/neutron/tests/unit/agent/linux/test_dhcp.py
+++ b/neutron/tests/unit/agent/linux/test_dhcp.py
@@ -1603,11 +1603,11 @@ class TestDnsmasq(TestBase):
     def test_output_opts_file_single_dhcp(self):
         expected = (
             'tag:tag0,option:dns-server,8.8.8.8\n'
-            'tag:tag0,option:classless-static-route,20.0.0.1/24,20.0.0.1,'
-            '169.254.169.254/32,192.168.0.1,'
-            '192.168.1.0/24,0.0.0.0,0.0.0.0/0,192.168.0.1\n'
-            'tag:tag0,249,20.0.0.1/24,20.0.0.1,'
-            '169.254.169.254/32,192.168.0.1,192.168.1.0/24,0.0.0.0,'
+            'tag:tag0,option:classless-static-route,192.168.1.0/24,0.0.0.0,'
+            '20.0.0.1/24,20.0.0.1,169.254.169.254/32,192.168.0.1,'
+            '0.0.0.0/0,192.168.0.1\n'
+            'tag:tag0,249,192.168.1.0/24,0.0.0.0,'
+            '20.0.0.1/24,20.0.0.1,169.254.169.254/32,192.168.0.1,'
             '0.0.0.0/0,192.168.0.1\n'
             'tag:tag0,option:router,192.168.0.1').lstrip()
 
@@ -1628,19 +1628,18 @@ class TestDnsmasq(TestBase):
     def test_output_opts_file_dual_dhcp_rfc3442(self):
         expected = (
             'tag:tag0,option:dns-server,8.8.8.8\n'
-            'tag:tag0,option:classless-static-route,20.0.0.1/24,20.0.0.1,'
-            '169.254.169.254/32,192.168.0.1,'
-            '192.168.1.0/24,0.0.0.0,0.0.0.0/0,192.168.0.1\n'
-            'tag:tag0,249,20.0.0.1/24,20.0.0.1,'
-            '169.254.169.254/32,192.168.0.1,192.168.1.0/24,0.0.0.0,'
+            'tag:tag0,option:classless-static-route,192.168.1.0/24,0.0.0.0,'
+            '20.0.0.1/24,20.0.0.1,169.254.169.254/32,192.168.0.1,'
+            '0.0.0.0/0,192.168.0.1\n'
+            'tag:tag0,249,192.168.1.0/24,0.0.0.0,'
+            '20.0.0.1/24,20.0.0.1,169.254.169.254/32,192.168.0.1,'
             '0.0.0.0/0,192.168.0.1\n'
             'tag:tag0,option:router,192.168.0.1\n'
             'tag:tag1,option:dns-server,8.8.8.8\n'
-            'tag:tag1,option:classless-static-route,'
-            '169.254.169.254/32,192.168.1.1,'
-            '192.168.0.0/24,0.0.0.0,0.0.0.0/0,192.168.1.1\n'
-            'tag:tag1,249,169.254.169.254/32,192.168.1.1,'
-            '192.168.0.0/24,0.0.0.0,0.0.0.0/0,192.168.1.1\n'
+            'tag:tag1,option:classless-static-route,192.168.0.0/24,0.0.0.0,'
+            '169.254.169.254/32,192.168.1.1,0.0.0.0/0,192.168.1.1\n'
+            'tag:tag1,249,192.168.0.0/24,0.0.0.0,'
+            '169.254.169.254/32,192.168.1.1,0.0.0.0/0,192.168.1.1\n'
             'tag:tag1,option:router,192.168.1.1').lstrip()
 
         self._test_output_opts_file(expected, FakeDualNetworkDualDHCP())
@@ -1666,19 +1665,18 @@ class TestDnsmasq(TestBase):
     def test_output_opts_file_dual_dhcp_rfc3442_one_on_link_subnet_route(self):
         expected = (
             'tag:tag0,option:dns-server,8.8.8.8\n'
-            'tag:tag0,option:classless-static-route,20.0.0.1/24,20.0.0.1,'
-            '169.254.169.254/32,192.168.0.1,'
-            '192.168.1.0/24,0.0.0.0,0.0.0.0/0,192.168.0.1\n'
-            'tag:tag0,249,20.0.0.1/24,20.0.0.1,'
-            '169.254.169.254/32,192.168.0.1,192.168.1.0/24,0.0.0.0,'
+            'tag:tag0,option:classless-static-route,192.168.1.0/24,0.0.0.0,'
+            '20.0.0.1/24,20.0.0.1,169.254.169.254/32,192.168.0.1,'
+            '0.0.0.0/0,192.168.0.1\n'
+            'tag:tag0,249,192.168.1.0/24,0.0.0.0,'
+            '20.0.0.1/24,20.0.0.1,169.254.169.254/32,192.168.0.1,'
             '0.0.0.0/0,192.168.0.1\n'
             'tag:tag0,option:router,192.168.0.1\n'
             'tag:tag1,option:dns-server,8.8.8.8\n'
-            'tag:tag1,option:classless-static-route,'
-            '169.254.169.254/32,192.168.1.1,'
-            '192.168.0.0/24,0.0.0.0,0.0.0.0/0,192.168.1.1\n'
-            'tag:tag1,249,169.254.169.254/32,192.168.1.1,'
-            '192.168.0.0/24,0.0.0.0,0.0.0.0/0,192.168.1.1\n'
+            'tag:tag1,option:classless-static-route,192.168.0.0/24,0.0.0.0,'
+            '169.254.169.254/32,192.168.1.1,0.0.0.0/0,192.168.1.1\n'
+            'tag:tag1,249,192.168.0.0/24,0.0.0.0,'
+            '169.254.169.254/32,192.168.1.1,0.0.0.0/0,192.168.1.1\n'
             'tag:tag1,option:router,192.168.1.1\n'
             'tag:tag2,option:dns-server,8.8.8.8\n'
             'tag:tag2,option:classless-static-route,'
@@ -1793,11 +1791,11 @@ class TestDnsmasq(TestBase):
     def test_output_opts_file_pxe_3port_2net(self):
         expected = (
             'tag:tag0,option:dns-server,8.8.8.8\n'
-            'tag:tag0,option:classless-static-route,20.0.0.1/24,20.0.0.1,'
-            '169.254.169.254/32,192.168.0.1,'
-            '192.168.1.0/24,0.0.0.0,0.0.0.0/0,192.168.0.1\n'
-            'tag:tag0,249,20.0.0.1/24,20.0.0.1,'
-            '169.254.169.254/32,192.168.0.1,192.168.1.0/24,0.0.0.0,'
+            'tag:tag0,option:classless-static-route,192.168.1.0/24,0.0.0.0,'
+            '20.0.0.1/24,20.0.0.1,169.254.169.254/32,192.168.0.1,'
+            '0.0.0.0/0,192.168.0.1\n'
+            'tag:tag0,249,192.168.1.0/24,0.0.0.0,'
+            '20.0.0.1/24,20.0.0.1,169.254.169.254/32,192.168.0.1,'
             '0.0.0.0/0,192.168.0.1\n'
             'tag:tag0,option:router,192.168.0.1\n'
             'tag:eeeeeeee-eeee-eeee-eeee-eeeeeeeeeeee,'