diff --git a/library/network_connections.py b/library/network_connections.py
index a86c5fa..648b8f3 100755
--- a/library/network_connections.py
+++ b/library/network_connections.py
@@ -723,6 +723,7 @@ class ArgValidator_DictIP(ArgValidatorDict):
                     default_value = list,
                 ),
                 ArgValidatorBool('route_append_only'),
+                ArgValidatorBool('rule_append_only'),
                 ArgValidatorList('dns',
                     nested = ArgValidatorIP('dns[?]', plain_address=False),
                     default_value = list,
@@ -743,6 +744,7 @@ class ArgValidator_DictIP(ArgValidatorDict):
                 'address': [],
                 'route': [],
                 'route_append_only': False,
+                'rule_append_only': False,
                 'dns': [],
                 'dns_search': [],
             },
@@ -1247,6 +1249,10 @@ class IfcfgUtil:
                                                  ip['route_append_only'] and content_current,
                                                  content_current['route6'] if content_current else None)
 
+        if ip['rule_append_only'] and content_current:
+            rule4_file = content_current['rule']
+            rule6_file = content_current['rule6']
+
         for key in list(ifcfg.keys()):
             v = ifcfg[key]
             if v is None:
diff --git a/library/test_network_connections.py b/library/test_network_connections.py
index 7bb49e0..740e747 100755
--- a/library/test_network_connections.py
+++ b/library/test_network_connections.py
@@ -242,6 +242,7 @@ class TestValidator(unittest.TestCase):
                         'dhcp4': True,
                         'address': [],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                         'route_metric6': None,
                         'dhcp4_send_hostname': None,
@@ -290,6 +291,7 @@ class TestValidator(unittest.TestCase):
                         'dhcp4': True,
                         'address': [],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                         'dns': [],
                         'dns_search': [],
@@ -360,6 +362,7 @@ class TestValidator(unittest.TestCase):
                             }
                         ],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                     },
                     'state': 'up',
@@ -415,6 +418,7 @@ class TestValidator(unittest.TestCase):
                             }
                         ],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                         'route_metric6': None,
                         'route_metric4': None,
@@ -466,6 +470,7 @@ class TestValidator(unittest.TestCase):
                             },
                         ],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [
                             {
                                 'family': socket.AF_INET,
@@ -519,6 +524,7 @@ class TestValidator(unittest.TestCase):
                             },
                         ],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [
                             {
                                 'network': '192.168.5.0',
@@ -547,6 +553,7 @@ class TestValidator(unittest.TestCase):
                         'dns': [],
                         'address': [],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                     },
                     'mac': None,
@@ -573,6 +580,7 @@ class TestValidator(unittest.TestCase):
                         'auto6': True,
                         'address': [],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                         'route_metric6': None,
                         'route_metric4': None,
@@ -637,6 +645,7 @@ class TestValidator(unittest.TestCase):
                         'dns': [],
                         'address': [],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                     },
                     'mac': None,
@@ -686,6 +695,7 @@ class TestValidator(unittest.TestCase):
                         'dns': [],
                         'address': [],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                     },
                     'mac': None,
@@ -731,6 +741,7 @@ class TestValidator(unittest.TestCase):
                     'ip': {
                         'address': [],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                         'auto6': True,
                         'dhcp4': True,
@@ -782,6 +793,7 @@ class TestValidator(unittest.TestCase):
                         'dhcp4': True,
                         'address': [],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                         'dns': [],
                         'dns_search': [ ],
@@ -826,6 +838,7 @@ class TestValidator(unittest.TestCase):
                         'dhcp4': True,
                         'address': [],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [],
                         'dns': [],
                         'dns_search': [ ],
@@ -872,6 +885,7 @@ class TestValidator(unittest.TestCase):
                         'dhcp4': True,
                         'address': [],
                         'route_append_only': False,
+                        'rule_append_only': False,
                         'route': [
                             {
                                 'family': socket.AF_INET,
@@ -962,6 +976,7 @@ class TestValidator(unittest.TestCase):
                         'dhcp4': True,
                         'address': [],
                         'route_append_only': True,
+                        'rule_append_only': False,
                         'route': [
                             {
                                 'family': socket.AF_INET,
@@ -1011,6 +1026,7 @@ class TestValidator(unittest.TestCase):
                   'ip': {
                       'dns_search': [ 'aa', 'bb' ],
                       'route_append_only': True,
+                      'rule_append_only': False,
                       'route': [
                           {
                               'network': '192.168.45.0',