Mark Andrews wrote:
Total hogwash. Add a bit of source address based routing within
the enterprise so that you hit the right exit routers for the source
address being used.
While source address based routing is not easy, it is a
lot less difficult than let end systems select the proper
source addresses.
Tag route entries with valid source prefixes.
With IGP which can carry source prefixes for corresponding route
entries, an exit router of a route entry has a source prefix of
the route entry.
Thus, no source address based routing necessary.
Masataka Ohta