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RE: survivability, rewriting



> An obvious comment about source address based routing is that source address
> based routing only has to be implemented within the multihomed site.

Is that true when you have a tree of reseller ISPs?

For instance

		DFZ
	    /     |    \
	ISP1	ISP2	ISP3
	/  \    /   \  /   \
     ISPA  ISPB      ISPC   ISPD
	      \      /
	       my site
	
  Erik