Eric Orth wrote:
CNAMEs already exist without a standardized limit. Good or bad, too late
to change that without breaking things.
According to rfc1034:
Domain names in RRs which point at another name should
always point at the primary name and not the alias.
CNAME chain is prohibited, though, according to the robustness
principle, the rfc says chains should be followed.
> aliasing apex names, are new and thus currently limited to zero.
Seems to be a reasonable restriction.
Masataka Ohta
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