Re: Default address used

I connected to the webserver using a littleral address [2001::2] and yes
they're on the same link.

On 11/26/05, Fredrik Tolf <[email protected]> wrote:
>
> On Thu, 2005-11-24 at 13:29 -0500, Jason Gauthier wrote:
> > Well I was capturing TCP/IP packets because we found an Apache server
> > working over IPv6.
>
> Would you mind describing in a bit greater detail what you found, and
> how your attempt was made? Such as, how did you try to connect to the
> Apache server (via a DNS name or a literal address?), is the Apache
> server on the same link, and so on?
>
> Fredrik Tolf
>
> > On 11/24/05, Fredrik Tolf <[email protected]> wrote:
> >         On Wed, 2005-11-23 at 22:25 -0500, Jason Gauthier wrote:
> >         > Well I mean, what's the use of having an IPv6 address if you
> >         can just
> >         > use your local link address?
> >         > There must be something I still don't understand.
> >
> >         The point is that the link-local address can only (as the name
> >         implies)
> >         be used on the local link. Routers are forbidden to route it
> >         beyond the
> >         same physical link network.
> >
> >         Therefore, it is often used when talking to other nodes on the
> >         same
> >         physical link (especially when another link-local address is
> >         used as the
> >         destination address). When talking to nodes on other links, an
> >         address
> >         with larger scope is used.
> >
> >         What kind of packets is it that you are capturing? Surely, the
> >         link-local address isn't used if you try to contact an outside
> >         host,
> >         such as www.ipv6.org?
> >
> >         Fredrik Tolf
> >
> >         > On 11/23/05, Fredrik Tolf <[email protected]> wrote:
> >         >         On Wed, 2005-11-23 at 12:15 -0500, Jason Gauthier
> >         wrote:
> >         >         > When I capture packets on Windows XP and that I've
> >         set up an
> >         >         IPv6
> >         >         > address with a DHCP server, the capture says the
> >         request is
> >         >         from the
> >         >         > default address that we can't delete on Windows
> >         XP.
> >         >
> >         >         By "default address", do you mean the fe80::*
> >         link-local
> >         >         address?
> >         >
> >         >         > Any idea how I could delete it or change the
> >         default address
> >         >         to use?
> >         >
> >         >         You cannot delete the link-local address, since the
> >         IPv6
> >         >         specification
> >         >         requires that every node has one. As for the source
> >         address to
> >         >         use for
> >         >         any given packet, that is decided depending on the
> >         destination
> >         >         address
> >         >         according to RFC 3484.
> >         >
> >         >         According to RFC 3484, it is possible to make a
> >         certain
> >         >         address
> >         >         "preferred" for being used as source address, but
> >         even so, an
> >         >         address is
> >         >         only tested for being preferred once it has been
> >         selected as a
> >         >         candidate
> >         >         after being tested for scope similarity. See section
> >         3.1 of
> >         >         RFC 3484 for
> >         >         the definition of address scopes.
> >         >
> >         >         > I really need him to make requests from the DHCP
> >         address
> >         >         given.
> >         >
> >         >         Thence comes the real question: Why would you want
> >         that?
> >         >
> >         >         Fredrik Tolf
> >         >
> >         >
> >         >
> >
> >
>
>