From 316f0867f68564ed7128bb740fdcbb42b0f46988 Mon Sep 17 00:00:00 2001
From: Steven Allen <steven@stebalien.com>
Date: Mon, 8 Apr 2019 18:41:22 -0700
Subject: [PATCH] identify: avoid parsing/printing multiaddrs

---
 p2p/protocol/identify/obsaddr.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/p2p/protocol/identify/obsaddr.go b/p2p/protocol/identify/obsaddr.go
index 793105bd..af153edc 100644
--- a/p2p/protocol/identify/obsaddr.go
+++ b/p2p/protocol/identify/obsaddr.go
@@ -167,7 +167,8 @@ func (oas *ObservedAddrSet) Add(observed, local, observer ma.Multiaddr,
 // IP addresses. In practice, this is what we want.
 func observerGroup(m ma.Multiaddr) string {
 	//TODO: If IPv6 rolls out we should mark /64 routing zones as one group
-	return ma.Split(m)[0].String()
+	first, _ := ma.SplitFirst(m)
+	return string(first.Bytes())
 }
 
 func (oas *ObservedAddrSet) SetTTL(ttl time.Duration) {