nanog mailing list archives
Re: Urrr... A-root server foul ?
From: Chris Cappuccio <chris () empnet com>
Date: Wed, 26 Aug 1998 14:47:34 -0700 (PDT)
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
Current thread:
- Urrr... A-root server foul ? Richard Irving (Aug 26)
- Re: Urrr... A-root server foul ? Havard . Eidnes (Aug 26)
- Re: Urrr... A-root server foul ? David Schiffrin (Aug 26)
- Re: Urrr... A-root server foul ? Bill Becker (Aug 26)
- Re: Urrr... A-root server foul ? Chris Cappuccio (Aug 26)
- <Possible follow-ups>
- RE: Urrr... A-root server foul ? Dave Van Allen (Aug 26)