From e735b2b1cfdc7dd3ea9f1f324ab9158fc7f19802 Mon Sep 17 00:00:00 2001
From: ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp>
Date: Mon, 27 Apr 2015 11:03:53 +0000
Subject: table: add AS loop detection

Signed-off-by: ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp>
---
 server/peer.go | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'server/peer.go')

diff --git a/server/peer.go b/server/peer.go
index d56e3e34..d7c3ac07 100644
--- a/server/peer.go
+++ b/server/peer.go
@@ -551,6 +551,15 @@ func (peer *Peer) sendUpdateMsgFromPaths(pList []table.Path) {
 				continue
 			}
 
+			if peer.peerConfig.PeerAs == path.GetSourceAs() {
+				log.WithFields(log.Fields{
+					"Topic": "Peer",
+					"Key":   peer.peerConfig.NeighborAddress,
+					"Data":  path,
+				}).Debug("AS PATH loop, ignore.")
+				continue
+			}
+
 			if !path.IsWithdraw() {
 				applied, path := peer.applyPolicies(peer.exportPolicies, path)
 				if applied && path == nil {
-- 
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