From: Stephen Hemminger <stephen@networkplumber.org>
Date: Wed, 18 Aug 2021 21:09:34 +0000 (-0700)
Subject: uapi: update neighbour.h
X-Git-Tag: v5.14.0~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1afde094988702fbc8cd553fedbed883d3be5638;p=thirdparty%2Fiproute2.git

uapi: update neighbour.h

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---

diff --git a/include/uapi/linux/neighbour.h b/include/uapi/linux/neighbour.h
index dc8b72201..00a60695f 100644
--- a/include/uapi/linux/neighbour.h
+++ b/include/uapi/linux/neighbour.h
@@ -66,8 +66,11 @@ enum {
 #define NUD_NONE	0x00
 
 /* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
-   and make no address resolution or NUD.
-   NUD_PERMANENT also cannot be deleted by garbage collectors.
+ * and make no address resolution or NUD.
+ * NUD_PERMANENT also cannot be deleted by garbage collectors.
+ * When NTF_EXT_LEARNED is set for a bridge fdb entry the different cache entry
+ * states don't make sense and thus are ignored. Such entries don't age and
+ * can roam.
  */
 
 struct nda_cacheinfo {