Well, according to your router's error message, it *did* work...it ensured you couldn't propagate that route update, thereby ensuring no traffic from your neighbors would traverse the prepended path.

Of course, it's a bit of a degenerate case of "working"--but it *did* serve to shift traffic away.  ^_^;;

Matt



On Mon, Apr 13, 2020, 13:33 Randy Bush <randy@psg.com> wrote:
> I’m using CAIDA’s bgpreader and this one looks like it might be an
> example of what you want.
>
> R|R|1586714402.000000|routeviews|route-views.eqix|||2914|206.126.236.12|103.148.41.0/24|206.126.236.12|2914 58717 134371 134371 134371 134371 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076 140076|140076|2914:410 2914:1405 2914:2406 2914:3400||

aut-num:        AS140076
as-name:        MIS-AS-AP
descr:          Mir Internet Service
country:        BD
org:            ORG-MIS3-AP
admin-c:        MISA2-AP
tech-c:         MISA2-AP
mnt-by:         APNIC-HM
mnt-irt:        IRT-MIS-BD
mnt-routes:     MAINT-MIS-BD
mnt-lower:      MAINT-MIS-BD
last-modified:  2020-01-31T06:35:38Z
source:         APNIC

actually, an example of what none of us wants :)

it seems a lot of folk think prepending acrually works.

thanks