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So, for example, if the server receives the SYN from router R3, it would send the SYN ACK and all subsequent packets for the TCP connection over that
same interface R3.
...

right idea.  works great.  see the following:

http://www.academ.com/nanog/feb1997/multihoming.html
http://www.irbs.net/internet/nanog/9706/0232.html
http://gatekeeper.dec.com/pub/misc/vixie/ifdefault/


This approach is particularly useful for host with multiple IPv6 tunnels. Some tunnel providers implement strict RPF, some don't. Where this is the case, having multiple tunnels (cf multiple address ranges) is problematic. Of course these days perhaps perhaps the IPv4 variant could be done with a stateful NAT.

Maybe case could be made for IPv6 NAT (and site-local addresses?) in this scnario...

- -w
- --
William Waites                       <[EMAIL PROTECTED]>
http://www.irl.styx.org/          +49 30 8894 9942
CD70 0498 8AE4 36EA 1CD7  281C 427A 3F36 2130 E9F5

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