Demote warning about runt frames to debug message.

This message is not too useful since there are various legitimate
ways that we can end up with runt frames, e.g. frames that only
ever passed through virtual network devices and never touched a
physical Ethernet.

diff --git a/lib/flow.c b/lib/flow.c
index 6ec8ffdbe4e0ba38a2aea331ad01595e923c32fa..53da6e9c3abaf8227331771d9166e7573e3859b5 100644 (file)
--- a/lib/flow.c
+++ b/lib/flow.c
@@ -50,8 +50,12 @@ flow_extract(struct buffer *packet, uint16_t in_port, struct flow *flow)
     struct eth_header *eth;
 
     if (b.size < ETH_TOTAL_MIN) {
-        VLOG_WARN("packet length %zu less than minimum size %d",
-                  b.size, ETH_TOTAL_MIN);
+        /* This message is not too useful since there are various ways that we
+         * can end up with runt frames, e.g. frames that only ever passed
+         * through virtual network devices and never touched a physical
+         * Ethernet. */
+        VLOG_DBG("packet length %zu less than minimum size %d",
+                 b.size, ETH_TOTAL_MIN);
     }
 
     memset(flow, 0, sizeof *flow);