RE: Multipath routing - failover version

	Hi,

	I recently incorporated multipath support into -CURRENT,
	for the upcoming 8.0.  This patch originated from the KAME
	project and builds on the existing routing data structures
	and infrastructure. As a result I did not have to
	modify the userland programs, however, I think netstat
	can use some tweaking in its output.=20

	I am in the process of incorporating additional functionalities
	such as allowing for preference setting, and performing active=20
	health-check on the gateways and updating the routes
accordingly.

>=20
> Switching between different paths is done by the kernel based=20
> on the link state of the interface associated with the=20
> gateway. This way when can achieve a level of redundancy at=20
> the link level (this is not a routing protocol!).
>=20

	Hmm... in the current code if_unroute() would remove
	the interface route when the interface is down.


	-- Qing
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