[PATCH 0/3] MR263: iphlpapi: Implement GetBestRoute2.

[Jinoh Kang (＠iamahuman)]

A major problem with this patch is that the function is agnostic to the
source argument.  Even after some tinkering I still haven't figured out
how exactly Windows uses this argument.

Also, possibly move GetBestRoute2 implementation to nsiproxy.sys if
applicable?