Level3 (3356) to outlook.office365.com via v6?

Tue Aug 2 22:01:32 UTC 2016

We have 2 customers complaining about this in the past 3 days - both using IPv4 only.  Glad to see this because maybe it’s a larger problem outside of our network.

Sam

> -----Original Message-----
> From: NANOG [mailto:nanog-bounces at nanog.org] On Behalf Of David Hubbard
> Sent: Tuesday, August 02, 2016 1:48 PM
> To: nanog at nanog.org
> Subject: Level3 (3356) to outlook.office365.com via v6?
> 
> Curious if anyone else is having issues reaching outlook.office365.com via ipv6
> over Level 3?  Our customers have begun reporting failures checking email, and in
> the ones who have had this issue, are using the mail server name
> outlook.office365.com and are on v6.  Traceroute6 shows the traffic dying shortly
> into Level 3 land at 2001:1900:4:1::3d1 which is likely a Tampa-area router.
> 
> Thanks,
> 
> David
> 
> 

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