From 5b5f6d8686eee808dd15009a04b2e9ab25b92096 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Mon, 26 Dec 2016 16:34:53 +0100
Subject: compat: support 3.18, 3.19, 4.0

---
 src/tests/netns.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/tests/netns.sh')

diff --git a/src/tests/netns.sh b/src/tests/netns.sh
index f17a3ef..6d20c1b 100755
--- a/src/tests/netns.sh
+++ b/src/tests/netns.sh
@@ -39,7 +39,7 @@ ip2() { pretty 2 "ip $*"; ip -n $netns2 "$@"; }
 sleep() { read -t "$1" -N 0 || true; }
 waitiperf() { pretty "${1//*-}" "wait for iperf:5201"; while [[ $(ss -N "$1" -tlp 'sport = 5201') != *iperf3* ]]; do sleep 0.1; done; }
 waitncatudp() { pretty "${1//*-}" "wait for udp:1111"; while [[ $(ss -N "$1" -ulp 'sport = 1111') != *ncat* ]]; do sleep 0.1; done; }
-waitiface() { pretty "${1//*-}" "wait for $2 to come up"; ip netns exec "$1" bash -c "while [[ \$(< \"/sys/class/net/$2/operstate\") != up ]]; do read -t .1 -N 0; done;"; }
+waitiface() { pretty "${1//*-}" "wait for $2 to come up"; ip netns exec "$1" bash -c "while [[ \$(< \"/sys/class/net/$2/operstate\") != up ]]; do read -t .1 -N 0 || true; done;"; }
 
 cleanup() {
 	set +e
-- 
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