From b5fb43bac9f433a7ee5d47428ae2abfabf066684 Mon Sep 17 00:00:00 2001
From: Evgenii Stratonikov <evgeniy@nspcc.ru>
Date: Wed, 27 Nov 2019 11:56:56 +0300
Subject: [PATCH] network: don't reconnect to peers with identical ID

---
 pkg/network/server.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pkg/network/server.go b/pkg/network/server.go
index a7d5765b6..549605bc1 100644
--- a/pkg/network/server.go
+++ b/pkg/network/server.go
@@ -235,8 +235,12 @@ func (s *Server) run() {
 					"peerCount": s.PeerCount(),
 				}).Warn("peer disconnected")
 				addr := drop.peer.PeerAddr().String()
-				s.discovery.UnregisterConnectedAddr(addr)
-				s.discovery.BackFill(addr)
+				if drop.reason == errIdenticalID {
+					s.discovery.RegisterBadAddr(addr)
+				} else {
+					s.discovery.UnregisterConnectedAddr(addr)
+					s.discovery.BackFill(addr)
+				}
 				updatePeersConnectedMetric(s.PeerCount())
 			} else {
 				// else the peer is already gone, which can happen