DNS Resolution 'Flapping' -- PLEASE HELP

[D. J. Bernstein]

Frederick Lowe writes:
> DNS resolution 'flaps' for the following FQDN:
> www.cmdrealty.com

The DNScache package, http://cr.yp.to/dnscache.html, includes a dnstrace
tool that easily locates inconsistencies like this:

   % dnstrace any www.cmdrealty.com `cat /usr/local/etc/dnscache/@` | less
   ...
   255 www.cmdrealty.com 198.41.0.4
   ...
                                   www.cmdrealty.com 172800 A 207.229.147.81
   255 www.cmdrealty.com 128.9.0.107
                                   www.cmdrealty.com 172800 A 207.229.147.81
   ...
   255 www.cmdrealty.com 192.112.36.4
                                   www.cmdrealty.com 172800 A 207.229.147.81
   ...
   255 www.cmdrealty.com 192.148.252.10
                                   www.cmdrealty.com 86400 CNAME cmdrealty.com
   255 www.cmdrealty.com 207.229.143.3
                                   www.cmdrealty.com 86400 CNAME cmdrealty.com
   ...

The bad 198.41.0.4 and 128.9.0.107 and 192.112.36.4 addresses are root
servers. Later parts of the output show that they're also .com servers,
and that there are other .com servers providing bad information.

---Dan