"Kent J" <kent.john***@telia.com> wrote in message
news:PVf1l.4797$U5.35348@newsb.telia.net...
> Hi all,
>
> I have a wireless network with a ADSL modem/router and a wireless DLink
> 'Range Extender'.
>
> When I run this I get: 'Windows - System Error. There is an IP-adressin
> conflict with another system on the network'.
> What does this mean? How can I fix it?
>
> Kent J.

> It means what it says - the IP address your computer is trying to use is
> already assigned to another device on the network.  Find the offending
> device by checking the IP address of all devices on the network, then
> change the address of one or the other devices - your PC or the other
> device on the network with the same IP address, whichever would be easiest.
>

> OK!
> I have a router with DHCP that provides PC:s running with a dynamic
> IP-address and also a Dlink RangeExtender, with a static
> IP-address,working as a slave.
>
> If I check attached devices from my router I'll get:
>
> #    IP Address     Device Name     MAC Address
> 1  192.168.0.5  MYCOMPUTER  00:21:91:DA:78:51
> 2  192.168.0.31  DLINK   00:21:91:DA:78:51
>
> Different IP-address but the same MAC Address.
> Is that a problem?
>
> Kent J.
>
>
> Richard G. Harper [MVP] skrev:
>> It means what it says - the IP address your computer is trying to use is
>> already assigned to another device on the network.  Find the offending
>> device by checking the IP address of all devices on the network, then
>> change the address of one or the other devices - your PC or the other
>> device on the network with the same IP address, whichever would be easiest.
>>

> Yes its a problem
>
>
> On 12/16/08 5:19 PM, in article sPV1l.4890$U5.36***@newsb.telia.net, "Kent
> J" <kent.john***@telia.com> wrote:
>
>> OK!
>> I have a router with DHCP that provides PC:s running with a dynamic
>> IP-address and also a Dlink RangeExtender, with a static
>> IP-address,working as a slave.
>>
>> If I check attached devices from my router I'll get:
>>
>> #    IP Address     Device Name     MAC Address
>> 1  192.168.0.5  MYCOMPUTER  00:21:91:DA:78:51
>> 2  192.168.0.31  DLINK   00:21:91:DA:78:51
>>
>> Different IP-address but the same MAC Address.
>> Is that a problem?
>>
>> Kent J.
>>
>>
>> Richard G. Harper [MVP] skrev:
>>> It means what it says - the IP address your computer is trying to use is
>>> already assigned to another device on the network.  Find the offending
>>> device by checking the IP address of all devices on the network, then
>>> change the address of one or the other devices - your PC or the other
>>> device on the network with the same IP address, whichever would be easiest.
>>>
>

> What is a MAC-address anyway?
> How can the address be the same?
>
> Kent J.
>
>
>
> Joel Guzman skrev:
>
>> Yes its a problem
>>
>>
>> On 12/16/08 5:19 PM, in article sPV1l.4890$U5.36***@newsb.telia.net,
>> "Kent
>> J" <kent.john***@telia.com> wrote:
>>
>>> OK!
>>> I have a router with DHCP that provides PC:s running with a dynamic
>>> IP-address and also a Dlink RangeExtender, with a static
>>> IP-address,working as a slave.
>>>
>>> If I check attached devices from my router I'll get:
>>>
>>> #    IP Address     Device Name     MAC Address
>>> 1  192.168.0.5  MYCOMPUTER  00:21:91:DA:78:51
>>> 2  192.168.0.31  DLINK   00:21:91:DA:78:51
>>>
>>> Different IP-address but the same MAC Address.
>>> Is that a problem?
>>>
>>> Kent J.
>>>
>>>
>>> Richard G. Harper [MVP] skrev:
>>>
>>>> It means what it says - the IP address your computer is trying to
>>>> use is
>>>> already assigned to another device on the network.  Find the offending
>>>> device by checking the IP address of all devices on the network, then
>>>> change the address of one or the other devices - your PC or the other
>>>> device on the network with the same IP address, whichever would be
>>>> easiest.
>>>>
>>

> See
> http://www.google.com/search?hl=en&q=MAC+address&aq=f&oq=
> and
> http://www.google.com/search?hl=en&q=MAC+address+spoofing
>
> Kent J wrote:
>> What is a MAC-address anyway?
>> How can the address be the same?
>>
>> Kent J.
>>
>>
>>
>> Joel Guzman skrev:
>>
>>> Yes its a problem
>>>
>>>
>>> On 12/16/08 5:19 PM, in article sPV1l.4890$U5.36***@newsb.telia.net,
>>> "Kent
>>> J" <kent.john***@telia.com> wrote:
>>>
>>>> OK!
>>>> I have a router with DHCP that provides PC:s running with a dynamic
>>>> IP-address and also a Dlink RangeExtender, with a static
>>>> IP-address,working as a slave.
>>>>
>>>> If I check attached devices from my router I'll get:
>>>>
>>>> #    IP Address     Device Name     MAC Address
>>>> 1  192.168.0.5  MYCOMPUTER  00:21:91:DA:78:51
>>>> 2  192.168.0.31  DLINK   00:21:91:DA:78:51
>>>>
>>>> Different IP-address but the same MAC Address.
>>>> Is that a problem?
>>>>
>>>> Kent J.
>>>>
>>>>
>>>> Richard G. Harper [MVP] skrev:
>>>>
>>>>> It means what it says - the IP address your computer is trying to
>>>>> use is
>>>>> already assigned to another device on the network.  Find the offending
>>>>> device by checking the IP address of all devices on the network, then
>>>>> change the address of one or the other devices - your PC or the other
>>>>> device on the network with the same IP address, whichever would be
>>>>> easiest.
>>>>>
>>>
>