[AusNOG] Vocus dropping traffic to Microsoft?

Shane Clay shane at caznet.com.au
Mon Jun 1 13:52:32 EST 2020

Not sure that's the case. Something is broken.
Gone again for us and at least 1 other.
Works from a TPG connection even though resolving to the same IP -

BGP routing table entry for
Paths: (1 available, best #1, table Default-IP-Routing-Table)
  Not advertised to any peer
  4826<https://bgp.he.net/AS4826> 8075<https://bgp.he.net/AS8075> 8068<https://bgp.he.net/AS8068>

TPG Connection:
PS U:\> ping
Pinging with 32 bytes of data:
Reply from bytes=32 time=19ms TTL=119

Vocus Looking Glass:

traceroute to (, 30 hops max, 60 byte packets

 1 (  0.502 ms  0.492 ms  0.359 ms

 2  ten-2-2-0-101.bdr03.syd04.nsw.vocus.net.au (  0.996 ms  0.888 ms  0.914 ms

 3  * * *

 4  * * *

 5  * * *

 6  * * * ->  30  * * *


From: AusNOG <ausnog-bounces at lists.ausnog.net> On Behalf Of francisfides at mailup.net
Sent: Monday, 1 June 2020 12:52 PM
To: ausnog at lists.ausnog.net
Subject: Re: [AusNOG] Vocus dropping traffic to Microsoft?

Seems like they inserted a bad CNAME into the record for most tenants briefly. Looks like it's fixed now but the DNS caches are still catching up.


  francisfides at mailup.net<mailto:francisfides at mailup.net>

On Mon, Jun 1, 2020, at 13:07, Shane Clay wrote:

Scratch that. Seems to have come good just as I pressed send. Was broken for about 45 minutes.

Did get some confirmation from another network that was seeing the same.


From: AusNOG <ausnog-bounces at lists.ausnog.net> On Behalf Of Shane Clay
Sent: Monday, 1 June 2020 12:36 PM
To: ausnog at ausnog.net
Subject: [AusNOG] Vocus dropping traffic to Microsoft?

Hi All

Is anyone else seeing Vocus drop traffic to some Microsoft services starting about 40 mins ago? Specifically, Sharepoint Online.

Example IP:

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