Hello Bryan;
On Sat, 2015-01-03 at 11:51 -0500, Bryan Fields wrote:
Why tunnel at the gateway level?, let the other gateways run BGP. Problem solved.
Not true. Up here in the NorthEast, for legal reasons, there is not one ISP who will let you broadcast via BGP peer a 44-net block unless UCSD is to relinquish ownership of the block to you and you can provide proof of this. Being a CTO for a few ISPs up here, I know the mentality of corporate lawyers quite well in this regard.
44-net is still viewed upon by many ISPs here to be an experimental network and is considered a liabilty to directly route on their own networks. Unfortunately in a commercial world, the dollar will always win.
This may not be as much an issue in your region so it would be easy to keep blinded to this scenario.