diff --git a/service/jni/com_android_server_connectivity_ClatCoordinator.cpp b/service/jni/com_android_server_connectivity_ClatCoordinator.cpp
index dae45f3..062d272 100644
--- a/service/jni/com_android_server_connectivity_ClatCoordinator.cpp
+++ b/service/jni/com_android_server_connectivity_ClatCoordinator.cpp
@@ -182,12 +182,19 @@
         throwIOException(env, "packet socket failed", errno);
         return -1;
     }
-    int on = 1;
+    const int on = 1;
+    // enable tpacket_auxdata cmsg delivery, which includes L2 header length
     if (setsockopt(sock, SOL_PACKET, PACKET_AUXDATA, &on, sizeof(on))) {
         throwIOException(env, "packet socket auxdata enablement failed", errno);
         close(sock);
         return -1;
     }
+    // needed for virtio_net_hdr prepending, which includes checksum metadata
+    if (setsockopt(sock, SOL_PACKET, PACKET_VNET_HDR, &on, sizeof(on))) {
+        throwIOException(env, "packet socket vnet_hdr enablement failed", errno);
+        close(sock);
+        return -1;
+    }
     return sock;
 }