Advertising rented IPv4 prefix from a different ASN.
theodore at ciscodude.net
Fri Aug 5 16:04:22 UTC 2016
> On Aug 5, 2016, at 8:52 AM, Mark Tinka <mark.tinka at seacom.mu> wrote:
> 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...
Yes, this is quite prevalent. For example a popular resolver within prefix 126.96.36.199/24 (and also 188.8.131.52/24) has 184.108.40.206/9 advertised by 3356.
Theodore Baschak - AS395089 - Hextet Systems
https://ciscodude.net/ - https://hextet.systems/
https://theodorebaschak.com/ - http://mbix.ca/
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