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When using Dns.GetHostAddresses(“fred”) it returns only IPv4 addresses in response. How to get the IPv6 addresses as well? Is there different method I shall use?
Socket.OSSupportsIPv6 returns true and IPv6 connections work fine. The OS is Windows 2008 R2, .Net version is 3.5.
IPv6 still uses DNS to resolve addresses so in order for this to work you will need to add an IPv6 entry to your zone file for this domain name. It’ll then resolve properly.
I suspect that Ping will fall back to IPv4 if an IPv6 is not available, not exactly what you’d hope once you’ve specified the ‘-6’ flag.