Cross-post from Russ on AusNOG list. Telstra blog post on issue is now live - http://exchange.telstra.com.au/an-update-on-our-september-30-bgp-issue/ Regards, Mark Sent from my iPhone
On 30 Sep 2020, at 08:29, Mark Duffell <mark@duffell.net> wrote: Hi Ross,
Just to confirm the AS1221 incident (INC000094009293) was resolved approx. 20:32 29/09/20 (UTC).
If anyone has further issues feel free to email me off-thread.
Regards,
-Mark Senior Network Engineer AS1221
Sent from my iPhone
On 30 Sep 2020, at 07:30, Ross Tajvar <ross@tajvar.io> wrote: Bad prefixes are all gone. This looks resolved from my point of view.
On Tue, Sep 29, 2020 at 5:18 PM Ross Tajvar <ross@tajvar.io> wrote:
I'm still seeing bad prefixes from Cogent, but our other upstreams (NTT, GTT, Telia) blocked them.
On Tue, Sep 29, 2020 at 5:09 PM Sadiq Saif <lists@sadiqsaif.com> wrote:
On Tue, 29 Sep 2020, at 16:36, Ross Tajvar wrote:
I'm surprised no one else has mentioned this yet, but Telstra is hijacking a lot of prefixes:
https://rpki.cloudflare.com/?view=bgp&prefix=&asn=1221&validState=Invalid
Since we don't have RPKI filtering in our network (yet), we are currently filtering everything with the path ".* 4637 1221$".
This is of course taking a while...
My employer's prefixes were affected, I posted about it on the AusNOG list so I could get some assistance. It has cleared up now but it took about two hours or so.
I saw AS paths like this from HE's looking glass: 6461x4, 4637x11, 1221
I would love to know what the root cause of the leak was.
-- Sadiq Saif