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If your application requires a specific protocol version, Google also provides IPv4-only, IPv6-only and dual-stack targets unaffected by the list of DNS resolve
by ZoeZoeBee 10y ago
If your application requires a specific protocol version, Google also provides IPv4-only, IPv6-only and dual-stack targets unaffected by the list of DNS resolvers above. The available CNAME targets are:
ghs.googlehosted.com: Automatic (default)
ghs4.googlehosted.com: IPv4 only
ghs6.googlehosted.com: IPv6 only
ghs46.googlehosted.com: IPv4 and IPv6