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#!/bin/sh
die() {
echo >&2 E: "$2" returned error code "$1"
echo >&2 N: Could not set up the loopback interface.
exit 1
}
if test -x /sbin/ifconfig; then
/sbin/ifconfig lo up || die $? ifconfig
elif test -x /sbin/ip; then
/sbin/ip link set lo up || die $? ip
elif test -x /bin/ip; then
/bin/ip link set lo up || die $? ip
else
echo >&2 E: Neither ifconfig nor ip found.
echo >&2 N: Could not set up the loopback interface.
exit 1
fi
# having this variable set could cause programs looking for unreachable machines
unset http_proxy
exec "$@"
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