Question about experimental RDATA Records

[Thomas Mandl]

Hi List,

I wonder if anyone could help me with this one.

RFC1035 says, that some ResourceRecords are "experimental", e.g. the MB
RDATA, MG RDATA, and so forth. (see RFC1035 page 13ff.)

Does this mean, they are not implemented in bind-9 or they are not (widely)
used so far by Nameservers.

If they are implemented in Bind-9 where can I find out which version of
Bind-9 does support these "experimental" records and which version does not?

Many thanks in advance
Thomas