[arin-ppml] What is a "host"?

[Vaughn Thurman - Swift Systems Inc]

Huh?  :- )

What about a multi-NIC device with the same IP's bound to multiple
interfaces?  What about proxy arp?  (i.e. What about load sharing, load
balancing, or bridging  systems that ARP for addresses that are also on
interfaces on discrete network segments behind them?)  Do we call that one
address two hosts?  The concepts OF TCP and UDP ports, NAT and PAT
overloading, NIC teaming, and other ARP tricks all make this VERY fuzzy.

Seriously.  Why don't we just leave hosts to mean a device that speak IP,
and really begin to speak about IP addresses when we quantify things instead
of hosts.  Hosts are getting fuzzier by the day, but an IP address is an IP
address, is an IP address.  IMHO.

~Vaughn

-----Original Message-----
From: Owen DeLong [mailto:owen at delong.com]
Sent: Thursday, September 16, 2010 3:21 PM
To: Vaughn Thurman - Swift Systems Inc
Cc: arin-ppml at arin.net
Subject: Re: [arin-ppml] What is a "host"?

Because there can be 30, 50, or even 1,000 unique IP addresses on an
interface, but, only one link local.

Owen

On Sep 16, 2010, at 12:12 PM, Vaughn Thurman - Swift Systems Inc wrote:

> Then why not just call it a unique IP address?  The less we have to code
our
> definitions, the better IMHO.
>
> ~Vaughn
>
> -----Original Message-----
> From: arin-ppml-bounces at arin.net [mailto:arin-ppml-bounces at arin.net] On
> Behalf Of Owen DeLong
> Sent: Thursday, September 16, 2010 3:08 PM
> To: Danny McPherson
> Cc: arin-ppml at arin.net
> Subject: Re: [arin-ppml] What is a "host"?
>
> I think the simplest useful definition of a host in an IPv6 context is:
>
> Each link local address present on the network segment constitutes a host.
>
> Owen
>
> On Sep 16, 2010, at 10:29 AM, Danny McPherson wrote:
>
>>
>> On Sep 13, 2010, at 7:36 PM, Hannigan, Martin wrote:
>>>>
>>>> Classically (read: not IPv6), a host is any device that speaks TCP/IP.
>>>> Node is used interchangeably while other terms are used to specify
>>>> specific types of host, such as a router.
>>>>
>>>>
>>>> Officially in IPv6: http://www.ietf.org/rfc/rfc4294.txt
>>>>
>>
>> One other useful references in this context is:
>>
>> Principles of Internet Host Configuration
> <http://tools.ietf.org/html/rfc5505>
>>
>> Of course, I think device multi-homiing, virtualization and
> application-level
>> configuration options (e.g., layering violations) continue to blur and
> complicate
>> clear demarcation, introduce complexity and cause operational badness.
>>
>> -danny
>>
>> _______________________________________________
>> PPML
>> You are receiving this message because you are subscribed to
>> the ARIN Public Policy Mailing List (ARIN-PPML at arin.net).
>> Unsubscribe or manage your mailing list subscription at:
>> http://lists.arin.net/mailman/listinfo/arin-ppml
>> Please contact info at arin.net if you experience any issues.
>
> _______________________________________________
> PPML
> You are receiving this message because you are subscribed to
> the ARIN Public Policy Mailing List (ARIN-PPML at arin.net).
> Unsubscribe or manage your mailing list subscription at:
> http://lists.arin.net/mailman/listinfo/arin-ppml
> Please contact info at arin.net if you experience any issues.
>
>
> _______________________________________________
> PPML
> You are receiving this message because you are subscribed to
> the ARIN Public Policy Mailing List (ARIN-PPML at arin.net).
> Unsubscribe or manage your mailing list subscription at:
> http://lists.arin.net/mailman/listinfo/arin-ppml
> Please contact info at arin.net if you experience any issues.