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Re: About IPv6 private address



I think that's pretty clever, actually.  It doesn't have to advertise
itself as a default router which, per
http://tools.ietf.org/html/rfc2461#section-6.2.3 if I read it
correctly, isn't hard.  The device could include a ULA generating
implementation or always use a well-known ULA (chosen by the
manufacturer).  It certainly warrants more thought, but it seems cool
to me so far.

On 2/3/08, Fred Baker <fred@cisco.com> wrote:
> This is straight off the top of my head, without a lot of thinking.
> But suppose the device took a random (as random as it could come up
> with) ULA and decided to use it locally, and became the "router",
> which is to say, issued an RA? That would be needed for the host to
> form an address anyway. The host could then connect to the local
> router, whose address it by definition knows (it is the only foreign
> address in its neighbor database). The router could discard the ULA
> after configuration completed and it had a prefix issued by its ISP.
>
> Do other folks have a suggestion?
>
>
> On Feb 4, 2008, at 5:45 AM, blue wrote:
>
> > Fred Baker wrote:
> >> On Feb 4, 2008, at 4:59 AM, blue wrote:
> >>> I want to ask if there's any reserved private IPv6 address? I
> >>> know  RFC4193 has defined Unique Local IPv6 Unicast Addresses,
> >>> which is  used to replace deprecated site-local address. However,
> >>> in user's  perspective, a device will need a well-known address,
> >>> such as  192.168.1.1 in IPv4, for a customer to connect to
> >>> without any  configuration. In RFC 4193, the address' "global ID"
> >>> is generated  randomly, and the address could not be known in
> >>> advance.
> >>
> >> No, there is no such "well known" address. Are you thinking of
> >> configuration purposes, such as a Linksys box uses - you http the
> >> magic address and configure it?
> >
> > Dear Fred:
> >
> > Yes, users need to configure our device via http, and if there's no
> > well-known IPv6 address, how do users know which address to connect
> > to? I have thought about a pre-configured link-local address;
> > however, browsers such as Firefox does not support link-local
> > address. Any suggestions?
> >
> > BR,
> > Yi-Wen
>
>
>
>