在 2012年3月31日 上午12:05，Bruce Dubbs <bruce.du...@gmail.com> 写道：
> xinglp wrote:
>> http://www.linuxfromscratch.org/lfs/view/development/scripts/apds27.html
>>
>> if [ "$(ip addr show ${IFACE} | grep 'inet ')" != "" ]; then
>> log_info_msg "Bringing down the ${IFACE} interface..."
>> ip link set ${IFACE} down
>> evaluate_retval
>> fi
>>
>> should be
>>
>> if [ "$(ip addr show ${IFACE} | grep 'inet ')" == "" ]; then
>> log_info_msg "Bringing down the ${IFACE} interface..."
>> ip link set ${IFACE} down
>> evaluate_retval
>> fi
>
> I'm missing something here. Why would we need to set an interface down
> if the inet line is null?
Maybe more than one address have been set to this
interface(ipv4-static dhcp pppoe etc...)
We've talked about this months before.
>
> -- Bruce
>
> --
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