Re: [lir-wg] Discussion about RIPE-261

[Kurt Erik Lindqvist <]

> > The *benefit* of "/48 multihoming" is that you can filter those
> > routes if you don't want to see them - then your routers will
> > send packets down the /32 road, and eventually hit a router
> > that knows about the /48 (which is why I consider this approach
> > superior to "everybody gets a independent prefix", which I can't
> > properly aggregate).
> This does _not_ work in at least two cases:
>
> - If someone implements RPF checks and someone else filters.
RPF will most likely break with most of the proposed multi6 solutions.

> - If the primary ISP (the one that announces the /32) dies. The site is
> dead as well. This is the #1 reason why organizations do multihome: 
> they
> want to be up even if their primary ISP tanks.
You mean if /48s where filtered? So don't filter ;-) That was the 
original idea with the proposal...

- kurtis -

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