On Sun, 2008-03-23 at 05:36 +0000, Andrew Suffield wrote: > > It does, but there's a factorial explosion in the number of rules > required (you stack up a 3-way route first, then three 2-way routes, > etcetera). The right solution is to teach the kernel to trim down > nexthop rules when it loses interfaces, rather than deleting them > outright. As usual, the right solution is a pain to implement.
It's not even that. As has been observed, you cannot have multiple default routes at the same cost, so once the nexthop routing goes away you effectively have only one default route, whichever one was installed with the lowest cost. b.
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