trafficmanager.net problem affects download.microsoft.com

[Daniel Stirnimann]

Hi all,

The authoritative name servers for trafficmanager.net respond 
differently depending on whether the query is made over IPv4 or IPv6.
When queried over IPv4, I consistently receive the correct CNAME 
pointing to main.dl.ms.akadns.net.

However, when queried over IPv6, the response is always "No Data."

I have tested all authoritative name servers for trafficmanager.net, and 
the results are consistent across the board.

If someone from Microsoft is on the list, maybe you can forward this.

Analysis:

trafficmanager.net.    86400    IN    NS    tm1.dns-tm.com.
trafficmanager.net.    86400    IN    NS    tm2.dns-tm.com.
trafficmanager.net.    86400    IN    NS    tm1.edgedns-tm.info.
trafficmanager.net.    86400    IN    NS    tm2.edgedns-tm.info.

# tm1.dns-tm.com.
dig @150.171.10.240 dlc-shim.trafficmanager.net. -> CNAME
dig @2603:1061:0:f00::f0 dlc-shim.trafficmanager.net. -> No Data

# tm2.dns-tm.com.
dig @150.171.16.240 dlc-shim.trafficmanager.net. -> CNAME
dig @2620:1ec:8ec:f00::f0 dlc-shim.trafficmanager.net. -> No Data

# tm1.edgedns-tm.info.
dig @13.107.222.240 dlc-shim.trafficmanager.net. -> CNAME
dig @2a01:111:4000:f00::f0 dlc-shim.trafficmanager.net. -> No Data

# tm2.edgedns-tm.info.
dig @13.107.206.240 dlc-shim.trafficmanager.net. -> CNAME
dig @2620:1ec:bda:f00::f0 dlc-shim.trafficmanager.net. -> No Data


Kind regards,
Daniel