An addendum to the Microsoft IRDP implementation. Its somewhat broken in that its
mapping of IRDP preference to routing metric is not monotonically decreasing ie.
high-preference/hi-priority routes are actually treated as low priority routes. Here
are the mappings I found on my win98 machine.
Laris
Preference Metric
-2,147,483,648 ignored
-2,147,483,647 +2,147,483,647
-10,000 +11,000
-2,000 +3,000
-1,000 +2,000
-1 +1,001
0 +1,000
+1 +999
+1,000 0
+1,001 +4,294,966,296
+2,000 +4,294,966,296
+2,147,483,647 +2,147,483,647
