2 Versions of IP Protocol on Laptop!?

Hi all

Not sure about this!
Colleagues laptop has 2 versions of IP Protocol listed under the properties
of his wireless connection.
IP Version 6 has addresses set to "obtain automatically"
IP Version 4 has fixed adresses.

Which protocol will the wireless connection use by default?
Why are there 2 IP Protocols?
This is a windows vista machine BTW :-(.

TIA

Phil

On 17/08/2007 13:12, TheScullster wrote:

> Which protocol will the wireless connection use by default?
> Why are there 2 IP Protocols?
> This is a windows vista machine BTW :-(.

Hardly any ISP will give you IPv6 unless you go out of your way to ask
for it, even they you'll have trouble finding one to offer it[1], the PC
will just end up giving itself a "link local" IPv6 address and not
really using it.

I've heard of the occasional story where e.g. firefox might be tempted
to use IPv6 first, then when that fails fall back to IPv4, causing
delays, in which case un-installing IPv6 is unlikely to do any harm.

[1] aaisp.net can oblige if you /do/ want one.

In article <(E-Mail Removed)>,
"TheScullster" <(E-Mail Removed)> writes:
> Hi all
>
> Not sure about this!
> Colleagues laptop has 2 versions of IP Protocol listed under the properties
> of his wireless connection.
> IP Version 6 has addresses set to "obtain automatically"
> IP Version 4 has fixed adresses.
>
> Which protocol will the wireless connection use by default?
> Why are there 2 IP Protocols?
> This is a windows vista machine BTW :-(.

http://en.wikipedia.org/wiki/IPV6
--
SAm.

On 17/08/2007 15:32, Sam Nelson wrote:

> http://en.wikipedia.org/wiki/IPV6

That is good technical info, many things are capable of using it, but
virtually nothing actually does, and that hasn't changed for years.

On Fri, 17 Aug 2007 13:12:31 +0100, in uk.telecom.broadband ,
"TheScullster" <(E-Mail Removed)> wrote:

>Hi all
>
>Colleagues laptop has 2 versions of IP Protocol listed under the properties
>of his wireless connection.
>IP Version 6 has addresses set to "obtain automatically"
>IP Version 4 has fixed adresses.

IPV4 is the normal one.
IPV6 is the "next generation" IP version, almost entirely unused by
anyone at the moment.

>Which protocol will the wireless connection use by default?

IPv4

>Why are there 2 IP Protocols?

new and current versions.
--
Mark McIntyre