[PATCH 0/2] Consolidate ipv4 default route selection

We've had two copies of this code for ages, and it has always driven
me crazy when I've seen these things.

With some minor changes, we can have one generic copy which is also
much more efficient than what we have right now.

Part of what makes this so easy to do right now is all of the RCU work
Eric has done in the FIB layers.  Since all of the datastructures are
RCU protected, and fib_select_default() already runs in an RCU read
side protected area, there is no special locking needed.