cpo@leaf-02# show interfaces vxlan
+vxlan vxlan1 {
+    mtu 1500
+    parameters {
+        nolearning
+    }
+    port 4789
+    source-interface dum1
+    vni 100
+}

cpo@leaf-02# commit
[ interfaces vxlan vxlan1 ]
Group, remote or source-address must be configured

[[interfaces vxlan vxlan1]] failed