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[3740] Small update to the User Guide (DHCPINFORM)

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Marcin Siodelski 2015-06-23 17:21:29 +02:00
parent 7a186d7bee
commit 08bac337b0
1 changed files with 4 additions and 3 deletions
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7
doc/guide/dhcp4-srv.xml
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@ -590,9 +590,10 @@ temporarily override a list of interface names and listen on all interfaces.
relies on the low level functions of an operating system to build the
data link, IP and UDP layer of the outgoing message. Typically, the
OS will first use ARP to obtain the client's link layer address to be
inserted into the frame's header. When the ARP exchange is successful,
the DHCP message can be unicast to the client, using the address
obtained.
inserted into the frame's header, if the address is not cached from
the previous transaction that the client had with the server.
When the ARP exchange is successful, the DHCP message can be unicast
to the client, using the address obtained.
</para>
<para>Some system administrators block ARP messages in their network,