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From: Alex Zinin (azininNEXSI.COM)
Date: Thu Jan 31 2002 - 15:12:56 CST
> If the unnumbered interface uses the one of the ip address of the numbered
> one, then that should be the next hop.
In fact, no, it does not have to be.
The next-hop address in the route is used to resolve the L2
details. You don't need them for a p2p link, and hence it
does not matter whether you have the next-hop address for
a route through it or not.
What a router uses as the source/dest address when sending
packets through an unnumbered link is actually an orthogonal