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Advertising rented IPv4 prefix from a different ASN.

On 5/Aug/16 15:40, Soon Keat Neo wrote:

> If you are just announcing more specific address space that you've obtained
> legitimately off their assigned address space, it should be no problem,
> just obtain an LoA and register it on the different databases and you
> should be set to ask your upstreams to allow the announcements.

Do people actually do this? A customer asked us to do this for them and
we refused, because inconsistent AS has never been a thing.

I'm apprehensive about a subnet and its aggregate appearing from
multiple AS's at the same time. But, I'm old school, so...