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-rw-r--r--vicn/resource/interface.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/vicn/resource/interface.py b/vicn/resource/interface.py
index db5f5427..0ae2dc94 100644
--- a/vicn/resource/interface.py
+++ b/vicn/resource/interface.py
@@ -30,7 +30,8 @@ class Interface(Resource):
node = Attribute(Node, description = 'Node to which the interface belongs',
multiplicity = Multiplicity.ManyToOne,
reverse_name = 'interfaces',
- mandatory = True)
+ mandatory = True,
+ key = True)
channel = Attribute(Channel, description = 'Channel to which the interface is attached',
multiplicity = Multiplicity.ManyToOne,
reverse_name = 'interfaces')