Google cloud DNS gives four nameservers, which appear to have IPv4 addresses. If an IPv6-only client tries to access a website, which uses Google Cloud nameservers, would the domain name get resolved to the concerned IPv6 address?
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DNS names are resolved to their respective query types. If you query a DNS for an A record, then you'll get the IPv4 address. If you query for an AAAA record then you'll get the IPv6 address.
If you take a look Google's nameservers also have IPv6 DNS addresses, so the IPv6-only client should be able to reach them. You can check that by using the dig command on a linux machine:
dig nameserver_address AAAA
If the client queries the for the AAAA record then it'll resolve to the IPv6 address and it should then be able to connect to it.
Diego Lima
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