table: not update timestamp if the path replaces the same path

If a new path has the exact same attributes that the existing one
(after RouteRefresh), we don't update the timestamp.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

1 files changed, 3 insertions, 0 deletions

diff --git a/table/destination.go b/table/destination.go
index 865ab03e..b35d380a 100644
--- a/table/destination.go
+++ b/table/destination.go
@@ -368,6 +368,9 @@ func (dest *DestinationDefault) removeOldPaths() {
 			// paths and when doing RouteRefresh (not EnhancedRouteRefresh)
 			// we get same paths again.
 			if newPath.getSource() == path.getSource() {
+				if reflect.DeepEqual(newPath.getPathAttrs(), path.getPathAttrs()) {
+					newPath.setTimestamp(path.getTimestamp())
+				}
 				oldPaths = append(oldPaths, path)
 				break
 			}