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Re: Urrr... A-root server foul ?
- From: Chris Cappuccio
- Date: Wed Aug 26 17:53:34 1998
On Wed, 26 Aug 1998, Richard Irving wrote:
> Is anyone else seeing this ? really *cool* udp trick,
> or is bcast space now DNS capable ? What am I missing ?
>
> Server: ns2.mci.net
> Address: 204.70.57.242
>
> Non-authoritative answer:
> Name: A.ROOT-SERVERS.NET
> Address: 198.41.0.4
>
> And a ping yields ?
>
>
> 64 bytes from 198.41.0.4: icmp_seq=16 ttl=250 time=59 ms
> 64 bytes from 198.41.0.4: icmp_seq=16 ttl=249 time=76 ms (DUP!)
> 64 bytes from 198.41.0.4: icmp_seq=16 ttl=250 time=77 ms (DUP!)
> 64 bytes from 198.41.0.4: icmp_seq=17 ttl=250 time=57 ms
> 64 bytes from 198.41.0.4: icmp_seq=17 ttl=250 time=64 ms (DUP!)
> 64 bytes from 198.41.0.4: icmp_seq=17 ttl=249 time=73 ms (DUP!)
> 64 bytes from 198.41.0.4: icmp_seq=18 ttl=250 time=71 ms
> 64 bytes from 198.41.0.4: icmp_seq=19 ttl=250 time=53 ms
> 64 bytes from 198.41.0.4: icmp_seq=19 ttl=249 time=57 ms (DUP!)
> 64 bytes from 198.41.0.4: icmp_seq=19 ttl=249 time=73 ms (DUP!)
>
Actually, let's use 12.7.96.0/24 as an example...
12.7.96.6 is the only machine in this range that has an answer on port 53
for DNS
empnet:chris {104} nslookup
Default Server: mimosa.noc.empnet.com
Address: 12.7.96.6
> server 12.7.96.255
Default Server: [12.7.96.255]
Address: 12.7.96.255
> merit.edu
Server: [12.7.96.255]
Address: 12.7.96.255
Non-authoritative answer:
Name: merit.edu
Address: 198.108.1.42
>
---
The following sentence is false
The preceding sentence is true
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