dhcp: T6692: Fix range options not present when `exclude` is used

Add smoketest to verify range options are present with `exclude`

2 files changed, 28 insertions, 3 deletions

diff --git a/smoketest/scripts/cli/test_service_dhcp-server.py b/smoketest/scripts/cli/test_service_dhcp-server.py
index 46c4e25a1..f891bf295 100755
--- a/smoketest/scripts/cli/test_service_dhcp-server.py
+++ b/smoketest/scripts/cli/test_service_dhcp-server.py
@@ -557,6 +557,7 @@ class TestServiceDHCPServer(VyOSUnitTestSHIM.TestCase):
         self.cli_set(pool + ['subnet-id', '1'])
         self.cli_set(pool + ['option', 'default-router', router])
         self.cli_set(pool + ['exclude', router])
+        self.cli_set(pool + ['range', '0', 'option', 'default-router', router])
         self.cli_set(pool + ['range', '0', 'start', range_0_start])
         self.cli_set(pool + ['range', '0', 'stop', range_0_stop])
 
@@ -569,6 +570,11 @@ class TestServiceDHCPServer(VyOSUnitTestSHIM.TestCase):
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks'], 'name', 'EXCLUDE-TEST')
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'subnet', subnet)
 
+        pool_obj = {
+            'pool': f'{range_0_start} - {range_0_stop}',
+            'option-data': [{'name': 'routers', 'data': router}]
+        }
+
         # Verify options
         self.verify_config_object(
                 obj,
@@ -579,7 +585,7 @@ class TestServiceDHCPServer(VyOSUnitTestSHIM.TestCase):
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
-                {'pool': f'{range_0_start} - {range_0_stop}'})
+                pool_obj)
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
@@ -600,6 +606,7 @@ class TestServiceDHCPServer(VyOSUnitTestSHIM.TestCase):
         self.cli_set(pool + ['subnet-id', '1'])
         self.cli_set(pool + ['option', 'default-router', router])
         self.cli_set(pool + ['exclude', exclude_addr])
+        self.cli_set(pool + ['range', '0', 'option', 'default-router', router])
         self.cli_set(pool + ['range', '0', 'start', range_0_start])
         self.cli_set(pool + ['range', '0', 'stop', range_0_stop])
 
@@ -612,6 +619,16 @@ class TestServiceDHCPServer(VyOSUnitTestSHIM.TestCase):
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks'], 'name', 'EXCLUDE-TEST-2')
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'subnet', subnet)
 
+        pool_obj = {
+            'pool': f'{range_0_start} - {range_0_stop_excl}',
+            'option-data': [{'name': 'routers', 'data': router}]
+        }
+
+        pool_exclude_obj = {
+            'pool': f'{range_0_start_excl} - {range_0_stop}',
+            'option-data': [{'name': 'routers', 'data': router}]
+        }
+
         # Verify options
         self.verify_config_object(
                 obj,
@@ -621,12 +638,12 @@ class TestServiceDHCPServer(VyOSUnitTestSHIM.TestCase):
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
-                {'pool': f'{range_0_start} - {range_0_stop_excl}'})
+                pool_obj)
 
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
-                {'pool': f'{range_0_start_excl} - {range_0_stop}'})
+                pool_exclude_obj)
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
diff --git a/src/conf_mode/service_dhcp-server.py b/src/conf_mode/service_dhcp-server.py
index e89448e2d..9c59aa63d 100755
--- a/src/conf_mode/service_dhcp-server.py
+++ b/src/conf_mode/service_dhcp-server.py
@@ -87,6 +87,10 @@ def dhcp_slice_range(exclude_list, range_dict):
                 'start' : range_start,
                 'stop' : str(ip_address(e) -1)
             }
+
+            if 'option' in range_dict:
+                r['option'] = range_dict['option']
+
             # On the next run our address range will start one address after
             # the exclude address
             range_start = str(ip_address(e) + 1)
@@ -104,6 +108,10 @@ def dhcp_slice_range(exclude_list, range_dict):
                   'start': str(ip_address(e) + 1),
                   'stop': str(range_stop)
                 }
+
+                if 'option' in range_dict:
+                    r['option'] = range_dict['option']
+
                 if not (ip_address(r['start']) > ip_address(r['stop'])):
                     output.append(r)
         else: