diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c
index 047c7ea4eb7a3200e56c6a37803b28c15808fadd..107a66cfa7005f1939fc146babaf683520c12264 100644
--- a/hw/virtio-9p.c
+++ b/hw/virtio-9p.c
@@ -1025,7 +1025,11 @@ static void v9fs_version(V9fsState *s, V9fsPDU *pdu)
 
     pdu_unmarshal(pdu, offset, "ds", &msize, &version);
 
-    if (strcmp(version.data, "9P2000.u")) {
+    if (!strcmp(version.data, "9P2000.u")) {
+        s->proto_version = V9FS_PROTO_2000U;
+    } else if (!strcmp(version.data, "9P2000.L")) {
+        s->proto_version = V9FS_PROTO_2000L;
+    } else {
         v9fs_string_sprintf(&version, "unknown");
     }
 
diff --git a/hw/virtio-9p.h b/hw/virtio-9p.h
index 67f808761f2d3494ce240b31cc990cfc4c5ae1e5..9286f59cd4a71c160940727b7bfcd09666bf5443 100644
--- a/hw/virtio-9p.h
+++ b/hw/virtio-9p.h
@@ -57,6 +57,11 @@ enum {
     P9_QTFILE = 0x00,
 };
 
+enum p9_proto_version {
+    V9FS_PROTO_2000U = 0x01,
+    V9FS_PROTO_2000L = 0x02,
+};
+
 #define P9_NOTAG    (u16)(~0)
 #define P9_NOFID    (u32)(~0)
 #define P9_MAXWELEM 16
@@ -144,6 +149,7 @@ typedef struct V9fsState
     uint16_t tag_len;
     uint8_t *tag;
     size_t config_size;
+    enum p9_proto_version proto_version;
 } V9fsState;
 
 typedef struct V9fsCreateState {