https://bugzilla.wikimedia.org/show_bug.cgi?id=44893

--- Comment #11 from Daniel Zahn <[email protected]> ---
making the root domain, without www, a CNAME would be a problem

<snip>
CNAME'ing a root record is technically not against RFC, but does have
limitations meaning it is a practice that is not recommended.

...

Per RFC:

    If a CNAME RR is present at a node, no other data should be present;

And Per IETF 'Common DNS Operational and Configuration Errors' Document:

    This is often attempted by inexperienced administrators as an obvious way
to allow your domain name to also be a host. However, DNS servers like BIND
will see the CNAME and refuse to add any other resources for that name. Since
no other records are allowed to coexist with a CNAME, the NS entries are
ignored. Therefore all the hosts in the podunk.xx domain are ignored as well!

References:

    http://tools.ietf.org/html/rfc1912 section '2.4 CNAME Records'
    http://www.faqs.org/rfcs/rfc1034.html section '3.6.2. Aliases and canonical
names'
</snip>

So probably the best you can do is leave the A record for tartupeedia.ee as it
is, but make www.tartupeedia.ee a CNAME for wikipedia-lb.wikimedia.org.

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