9200 unable so Smart License due IPv6 name resolution??

[soportefibratel]

Hello everyone,

I'm having an issue with the Smart License registration on a 9200 Stack running Version 16.09.04. Altough in both the Core Switch (an old 4500) and the access switch I'm trying to register (9200) I have configured the same name servers, on the 9200 it's resolving the IPv6 address for Cisco, and thus, is unable to ping to it.

Below you can see how the core switch (rigth side) resolves IPv4 addresses, but the 9200 is resolving Cisco or Facebook with IPv6. I can ping all the IPv4 addresses from the 9200, but I'm unable to ping to the names if they are resolved with IPv6

I've disabled "ipv6 unicast-routing" and also entered "ip host cisco.com 72.163.4.185" on the 9200 but still no luck.

Any ideas would be welcomed

Thanks in advance

[Bill]

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