[enum-wg] Italian Nameservers for 9.3.164.arpa. dead?

Hi Bernie,

It is possible that there is only 1 physical host. Also the best thing is to 
have nameservers in different subnets and different networks (where possible 
even different buildings). I don't know the RFC numbers.

2 nameservers are enough if they are on different locations and different 
networks and different subnets however.

With kind regards, Met vriendelijke groet,

Mark Scholten
Stream Service
Web: http://www.streamservice.nl/
E-mail: mark at streamservice.nl
NOC: http://www.mynoc.eu/
NOC e-mail: noc at streamservice.nl
Tel.: +31 (0)642 40 86 02
KVK: 08141074
BTW: NL104278274B01
----- Original Message ----- 
From: "Bernie Hoeneisen" <bhoeneis at switch.ch>
To: "Jim Reid" <jim at rfc1035.com>
Cc: "RIPE ENUM WG" <enum-wg at ripe.net>
Sent: Monday, January 21, 2008 5:55 PM
Subject: Re: [enum-wg] Italian Nameservers for 9.3.164.arpa. dead?


Hi Jim

Thanks for confirming this.

On Mon, 21 Jan 2008, Jim Reid wrote:

> Same as it's always been Bernie. The Tier 1 registry for +39 should beef 
> up
> its DNS infrastructure, for example by buying DNS service from a reliable
> hosting provider.

Would Ripe have the possibility to (temporarly) remove the delegation, if
such situations occur? Unfortunately, it happens quite often with
Italy....:-(

> It is particularly disappointing that the 9.3.e164.arpa zone seems to
> delegated to just two name servers that live on the same subnet. RFC2182
> advised against this 11 years ago.

Could it even be that these two IP addresses point to the same (physical)
host? (Both IPs report at the same time nameserver down, but hosts up.)

cheers,
  Bernie