Path: ...!news.misty.com!weretis.net!feeder6.news.weretis.net!tncsrv06.tnetconsulting.net!tncsrv09.home.tnetconsulting.net!.POSTED.omega.home.tnetconsulting.net!not-for-mail
From: Grant Taylor <gtaylor@tnetconsulting.net>
Newsgroups: comp.os.linux.misc
Subject: Re: I never thought of this scenario
Date: Wed, 10 Apr 2024 09:07:33 -0500
Organization: TNet Consulting
Message-ID: <uv66f5$t1a$1@tncsrv09.home.tnetconsulting.net>
References: <uutq04$2n9pt$1@dont-email.me>
 <07WdnchvLrr2GI_7nZ2dnZfqn_qdnZ2d@giganews.com>
 <uuu39t$2pd0s$1@dont-email.me> <uuvblp$32mbm$1@dont-email.me>
 <uuve5k$6pq$1@tncsrv09.home.tnetconsulting.net>
 <uuvf2e$33bqs$1@dont-email.me>
 <uuvhp6$g0s$1@tncsrv09.home.tnetconsulting.net>
 <uuvij0$340q8$2@dont-email.me>
 <uuvl9j$uaf$1@tncsrv09.home.tnetconsulting.net>
 <uv0017$3ajd1$1@dont-email.me>
 <uv1ucj$sti$1@tncsrv09.home.tnetconsulting.net> <uv2e9m$jin$2@dont-email.me>
 <uv2g3g$39k$1@tncsrv09.home.tnetconsulting.net> <uv320m$4tr5$1@dont-email.me>
 <uv4jd3$mj2$2@tncsrv09.home.tnetconsulting.net> <uv5doe$q7om$4@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Wed, 10 Apr 2024 14:07:33 -0000 (UTC)
Injection-Info: tncsrv09.home.tnetconsulting.net; posting-host="omega.home.tnetconsulting.net:198.18.1.140";
	logging-data="29738"; mail-complaints-to="newsmaster@tnetconsulting.net"
User-Agent: Mozilla Thunderbird
Content-Language: en-US
In-Reply-To: <uv5doe$q7om$4@dont-email.me>
Bytes: 2991
Lines: 31

On 4/10/24 02:05, Lawrence D'Oliveiro wrote:
> What is the point of adding something to make those non-routable uses
> routable, if the protocol is already supposed to be routable?

What is the point of handing someone a microphone in conference so that 
others further away can hear them?  Does handing them a microphone 
change what they are saying?

The purpose of DHCP relay / helper agents is to take the DHCP packet 
which is using non-routable source (0.0.0.0) and destination 
(255.255.255.255.) and send send / proxy them to the DHCP server using 
routable source (relay) and destination (remote DHCP server).

The only other modification that I'm aware that a DHCP relay / helper 
does is add an additional field to identify the the relay / helper and 
the source client's MAC address in the outgoing DHCP packet.  The rest 
of the contents of the DHCP packet is substantively unmodified.

What's more is that the DHCP packet format (the unit the protocol speaks 
in) is the same for both use cases, client <-> relay as well as relay 
<-> server.

If a child picks up a basket of toys but can't reach the shelf, does the 
basket of toys change when an adult takes the basket and places it on 
the shelf for the child?  Does adding the child's name to the front of 
the basket alter the basket contents?  No, and no, tt is still the same 
basket of toys.



-- 
Grant. . . .