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From: Marc Haber <mh+usenetspam1118@zugschl.us>
Newsgroups: comp.os.linux.misc
Subject: Re: I never thought of this scenario
Date: Sat, 20 Apr 2024 13:54:05 +0200
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Richard Kettlewell <invalid@invalid.invalid> wrote:
>I don’t personally care how DHCP gets across routers but from a quick
>skim it looks like it relies some kind of relay agent. Table 1 or
>section 3.1 might be reasonable references.

DHCP uses both broadcast and unicast communication. Broadcast is
mainly used in stages where the client system does not yet have a
valid IP address and thus cannot use unicast.

For the broadcast part of the protocol, a relay agent is needed when
the DHCP server does not have access to the broadcast domain the
client is connected to.

As soon as the client can speak proper IP, it communicates directly
with the DHCP server, this part of communication relys on regular IP
routing and does not need the relay agent any more.

Greetings
Marc
-- 
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Marc Haber         |   " Questions are the         | Mailadresse im Header
Rhein-Neckar, DE   |     Beginning of Wisdom "     | 
Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402