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-rw-r--r--contrib/qos/tc.sh4
1 files changed, 2 insertions, 2 deletions
diff --git a/contrib/qos/tc.sh b/contrib/qos/tc.sh
index 5f9b87d9b2..ccb0f4f895 100644
--- a/contrib/qos/tc.sh
+++ b/contrib/qos/tc.sh
@@ -33,7 +33,7 @@ tc class add dev ${IF} parent 1:1 classid 1:11 htb rate ${LIMIT} ceil ${LIMIT} p
tc filter add dev ${IF} parent 1: protocol ip prio 1 handle 1 fw classid 1:10
tc filter add dev ${IF} parent 1: protocol ip prio 2 handle 2 fw classid 1:11
-if [ ! -z "${LOCALNET_V6}" ] ; then
+if [ -n "${LOCALNET_V6}" ] ; then
# v6 cannot have the same priority value as v4
tc filter add dev ${IF} parent 1: protocol ipv6 prio 3 handle 1 fw classid 1:10
tc filter add dev ${IF} parent 1: protocol ipv6 prio 4 handle 2 fw classid 1:11
@@ -56,7 +56,7 @@ fi
iptables -t mangle -A OUTPUT -p tcp -m tcp --dport 8333 ! -d ${LOCALNET_V4} -j MARK --set-mark 0x2
iptables -t mangle -A OUTPUT -p tcp -m tcp --sport 8333 ! -d ${LOCALNET_V4} -j MARK --set-mark 0x2
-if [ ! -z "${LOCALNET_V6}" ] ; then
+if [ -n "${LOCALNET_V6}" ] ; then
ip6tables -t mangle -A OUTPUT -p tcp -m tcp --dport 8333 ! -d ${LOCALNET_V6} -j MARK --set-mark 0x4
ip6tables -t mangle -A OUTPUT -p tcp -m tcp --sport 8333 ! -d ${LOCALNET_V6} -j MARK --set-mark 0x4
fi