diff --git a/yaml/xyz/openbmc_project/Network/EthernetInterface.interface.yaml b/yaml/xyz/openbmc_project/Network/EthernetInterface.interface.yaml
index 2c3c108..d8b6d2f 100644
--- a/yaml/xyz/openbmc_project/Network/EthernetInterface.interface.yaml
+++ b/yaml/xyz/openbmc_project/Network/EthernetInterface.interface.yaml
@@ -18,6 +18,12 @@
       description: >
           This indicates if the speed and duplex are automatically negotiated
           and configured on this ethernet interface.
+    - name: MTU
+      type: size
+      default: 0
+      description: >
+          This indicates the size in bytes of largest protocol data unit,
+          which can be passed in an Ethernet frame on the interface.
     - name: DomainName
       type: array[string]
       description: >