For a fuller discussion of this scenario, you can read this draft:
http://wiki.tools.ietf.org/id/draft-ietf-v6ops-ipv6-multihoming-without-ipv6nat-00.txt

Frank

-----Original Message-----
From: Randy Carpenter [mailto:rcar...@network1.net] 
Sent: Saturday, June 11, 2011 8:50 PM
To: nanog@nanog.org
Subject: Question about migrating to IPv6 with multiple upstreams.


I have an interesting situation at a business that I am working on. We 
currently have the office set up with redundant connections for their mission 
critical servers and such, and also have a (cheap) cable modem for general 
browsing on client machines.

The interesting part is that the client machines need to access some customer 
networks via the main redundant network, so we have a firewall set up to route 
those connections via the redundant connections, and everything else via the 
cheaper, faster cable modem. NAT is used on both outbound connections.

With IPv6, we are having some trouble coming up with a way to do this. Since 
there is no NAT, does anyone have any ideas as to how this could be 
accomplished?

In a nutshell: how do you have 2 upstream connections, and choose between them 
based on outbound destination?

thanks,
-Randy



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