Was this done in 7.1 or 6.35?
Khaled: I'm on Windows 7, but I don't have any IPv6-capable interfaces other than loopback; the rest only gets IPv4. And I'd say it will still take some time until my ISP offers IPv6.
Making the request more explicit is IMO a good idea - just like the old one used to be and the new one has its switches for:
IPv4: /dns domain.tld or /dns -4 domain.tld
IPv6: /dns -6 domain.tld
both: /dns -46 domain.tld