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R21xx-HP FlexFabric 11900 Layer 3 IP Services Configuration Guide

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Solution
1. Use the display dns host ipv6 command to verify that the specified domain name is in the cache.
2. If the specified domain name does not exist, check that dynamic domain name resolution is
enabled, and that the DNS client can communicate with the DNS server.
3. If the specified domain name is in the cache, but the IPv6 address is incorrect, check that the DNS
client has the correct IPv6 address of the DNS server.
4. Verify that the mapping between the domain name and IPv6 address is correct on the DNS server.