Re: Which RFC?

Anyone know *which* RFC says a packets should be routed using the most specific route in a routing table, not (for instance) the first route in the table that matches, or, for instance, using a less specific route that has a better metric? This is so basic I hardly know where to find it, but I have a (for the time being anonymous) systems vendor who really prefers the way their kernel does it .... Oddly enough it doesn't work well with subnetting.

RFC 1520, 1519, 1518 in order of relevance. You should probably read them in numerical order tho.. :)