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diff --git a/client/scripts/linux b/client/scripts/linux
index 0c42969..2e7274b 100755
--- a/client/scripts/linux
+++ b/client/scripts/linux
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
# dhclient-script for Linux. Dan Halbert, March, 1997.
# Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
# No guarantees about this. I'm a novice at the details of Linux
@@ -428,7 +428,7 @@ case "$reason" in
# Check if any IPv6 address on this interface is marked as
# tentative.
${ip} addr show ${interface} | grep inet6 | grep tentative \
- &> /dev/null
+ > /dev/null 2>&1
if [ $? -eq 0 ]; then
# Wait for duplicate address detection to complete or for
# the timeout specified as --dad-wait-time.
@@ -437,7 +437,7 @@ case "$reason" in
# We're going to poll for the tentative flag every second.
sleep 1
${ip} addr show ${interface} | grep inet6 | grep tentative \
- &> /dev/null
+ > /dev/null 2>&1
if [ $? -ne 0 ]; then
break;
fi
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