2 files changed, 6 insertions, 1 deletions
diff --git a/src/conf_mode/service_ipoe-server.py b/src/conf_mode/service_ipoe-server.py
index 16c82e591..c7e3ef033 100755
--- a/src/conf_mode/service_ipoe-server.py
+++ b/src/conf_mode/service_ipoe-server.py
@@ -70,6 +70,8 @@ def verify(ipoe):
         if 'client_subnet' in iface_config and 'vlan' in iface_config:
             raise ConfigError('Option "client-subnet" and "vlan" are mutually exclusive, '
                               'use "client-ip-pool" instead!')
+        if 'vlan_mon' in iface_config and not 'vlan' in iface_config:
+            raise ConfigError('Option "vlan-mon" requires "vlan" to be set!')
 
     verify_accel_ppp_authentication(ipoe, local_users=False)
     verify_accel_ppp_ip_pool(ipoe)
diff --git a/src/conf_mode/service_pppoe-server.py b/src/conf_mode/service_pppoe-server.py
index 566a7b149..ac697c509 100755
--- a/src/conf_mode/service_pppoe-server.py
+++ b/src/conf_mode/service_pppoe-server.py
@@ -121,9 +121,12 @@ def verify(pppoe):
         raise ConfigError('At least one listen interface must be defined!')
 
     # Check is interface exists in the system
-    for interface in pppoe['interface']:
+    for interface, interface_config in pppoe['interface'].items():
         verify_interface_exists(pppoe, interface, warning_only=True)
 
+        if 'vlan_mon' in interface_config and not 'vlan' in interface_config:
+            raise ConfigError('Option "vlan-mon" requires "vlan" to be set!')
+
     return None