A proposal for reducing routes due to multihoming

It's dead simple, really: Assign address blocks to pairs of providers.
Both providers announce those blocks all the time, and assign addresses
out of those blocks to customers who multihome between those two

Subscriber A gets netblock from B who cooperates with C. Subscriber A
hates C and goes with D. What now? D has to advertize the route and C
has to stop. There goes the simplicity.

Competition.. gotta love it.


No. The block is not PI space. Subscriber A must renumber if he switches
to another provider. The block will still be advertised as the aggregate
w/o any holes.