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On Nov 12, 2007, at 12:27 PM, marcelo bagnulo braun wrote:
AFAIU, you are essentially proposing to perform source address based routing by the hosts and by the routers in a multiprefix site, is that correct?
I don't like the term, because I first do a destination lookup and only look up the source address in certain cases. Kind of like the previous comment on source routing, which in IEEE 802.5, DSR, and RFC 791 IP means that the source specifies all or part of the routing path. I think the term mis-states the case.
But yes, in certain cases where there is a multipath route, the point is that if the datagram is handed to the wrong ISP and the ISP is doing ingress filtering, the datagram will be dropped, and hence I suggest that we direct it toward the right ISP.
Is there something wrong with that? Would you prefer it be dropped as it leaves the site? Would you prefer that the matter be indeterminate?
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