RE: [dhcwg] How does DHCP client know when it's at home?

Alper Yegin <alper.yegin@samsung.com> Tue, 03 August 2004 21:07 UTC

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Date: Tue, 03 Aug 2004 13:55:32 -0700
From: Alper Yegin <alper.yegin@samsung.com>
Subject: RE: [dhcwg] How does DHCP client know when it's at home?
In-reply-to: <20040803175702.GA28332@sverresborg.uninett.no>
To: "'Stig Venaas'" <Stig.Venaas@uninett.no>, dhcwg@ietf.org
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Hi Stig,

> Regarding the MIPv6 HA option, it was suggested that client would use
> this when at home, and ignore the option if it gets something when not
> at home.

Unfortunately that is not accurate. I should have corrected that at the
meeting.

The current I-D has the provision to deliver home agent info that
pertains to the currently visited network, or a remote network. The MNId
is used to convey the domain the information should pertain to. My MN
should be able to say "get me a home agent from the access network I'm
visiting", or "give me a home agent from anotherdomain.com". 

> I don't understand how a client can know when it's at home, are there
> any mechanisms for that?
> 
> If it is, it might be more useful to also have DHCP options for things
> like POP/IMAP servers etc where you want to learn the addresses when
> at home, and keep using the same when away.
> 
> Stig

Alper


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