diff --git a/metallb.io/l2advertisement_v1beta1.json b/metallb.io/l2advertisement_v1beta1.json
index 82787553..68371031 100644
--- a/metallb.io/l2advertisement_v1beta1.json
+++ b/metallb.io/l2advertisement_v1beta1.json
@@ -70,6 +70,13 @@
           },
           "type": "array"
         },
+       "interfaces": {
+          "description": "A list of interfaces to announce from. The LB IP will be announced only from these interfaces.If the field is not set, we advertise from all the interfaces on the host.",
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
         "nodeSelectors": {
           "description": "NodeSelectors allows to limit the nodes to announce as next hops for the LoadBalancer IP. When empty, all the nodes having  are announced as next hops.",
           "items": {