Re: draft-ietf-nat-protocol-complications-02.txt

[Valdis . Kletnieks]

On Tue, 25 Apr 2000 08:18:20 PDT, Bill Manning said:
>       The 2q2000 data for the in-addr tree shows 77402 unique
>       servers answering for 693,337 zones.  
>       19515 servers blocked/refused data. Of the 57887 that 
>       answered, these are the numbers for improper configuration:
> 
>       BAD_SERVER:     4278
>       FORMERR:        8
>       NXDOMAIN:       28
> 
>       So, of the 57,887 visable servers, 4314 are improperly configured 
>       in the visable in-addr.arpa. tree.  Thats 7.45% of the
>       servers being "not well maintained".  I know of no similar data

Does "not well maintained" include the following:

1) DNS server for the zone is originally configured correctly, and the
first 20-30 hosts are entered with a proper A record and a PTR that matches.

2) Clueful guy leaves, new DNS "goo-roo" takes over, and adds the next 300
machines with just an A record, and no PTR matching.  The checks you make
would show this as "well maintained", even though 90% of the hosts are broken
with respect to PTR entries.

Given that 7% of the sites can't get past step (1), I'm willing to bet that
a lot MORE of the sites are accumulating cruft under step (2).

-- 
                                Valdis Kletnieks
                                Operating Systems Analyst
                                Virginia Tech