This looks like a route that has been cached by some ISPs/routers even though a withdrawal has actually happened. If you actually forward packets a long the path, you'll see its not following the AS Path suggested, instead the real route that it should be. Bouncing your session with 4637 would likely clear this. -Tom On Fri, May 25, 2018 at 11:59 AM, Nikolas Geyer <nik@neko.id.au> wrote:
Greetings!
Actually, what you have provided below shows the exact opposite. It shows ColoAU have received the route from 4637 who have received it from 3257 who have received it from 29909 who have received it from 16532 who originated it. It infers nothing about who 16532 found the route to come from.
It is evident that GTT are advertising that route to Telstra Global :)
Regards, Nik.
And I'm pretty sure AS3257 (GTT ) is in the same boat as us, as
they're not the one advertising those routes to AS4637
AS16532 found it to come from AS4637 as you can see from this ColoAU
LG output below
----- https://lg.coloau.com.au/
vrf-international.inet.0: 696533 destinations, 2248101 routes (696249
active, 0 holddown, 103835 hidden)
+ = Active Route, - = Last Active, * = Both
18.29.238.0/23 *[BGP/170] 1d 19:57:28, localpref 90, from 103.97.52.2 AS path: 4637 3257 29909 16532 16532 16532 16532 I, validation-state: unverified
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