[mif] question about draft-montenegro-mif-multihoming-00.txt
marcelo bagnulo braun <marcelo@it.uc3m.es> Mon, 16 March 2009 20:58 UTC
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Date: Mon, 16 Mar 2009 21:59:19 +0100
From: marcelo bagnulo braun <marcelo@it.uc3m.es>
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Subject: [mif] question about draft-montenegro-mif-multihoming-00.txt
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Hi, Read the draft, very clear and useful, thanks for writing it. I only have one clarifying question at this point: In section 6. DNS Query Behavior it reads: The DNS Client service queries the DNS servers in the following order: 1. The DNS Client service sends the name query to the first DNS server on the preferred interface's list of DNS servers and waits one second for a response. I understand then that Windows vista still uses the preferred interface concept, not for routing but yes for the DNS queries, right? And the preferred interface is the first one bound to the TCP ip stack while booting, right? So, how this works with dual faced DNS? I understand that if the dual faced DNS only provides answer for a given query over one of the faces, then this works more or less fine cause windows retries (i say more or less cause it may result in latency, i guess) But if the dual faced does provide replies in both faces, but different addresses, then how does this works? I mean, i guess it should work cause if the answer of the dns query returns for instance a private address, then rfc3484 longest prefix match rule will prefer the source address with the same scope and will use the interface with the private address, is that correct? Is it then accurate to say that the source address selection mechanism is used to select the right outgoing interface in case the routing table doesn't provide a unique putgoing interface? (i mean, the interface selection for outgoing packet would be first determined by routing and if the routing doesn't select a single interface, then selected based on the source address?) Regards, marcelo
- [mif] question about draft-montenegro-mif-multiho… marcelo bagnulo braun
- Re: [mif] question about draft-montenegro-mif-mul… gabriel montenegro