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Full Discussion: Tools How to ignore requests in dhcpd?
Top Forums UNIX for Dummies Questions & Answers Tools How to ignore requests in dhcpd? Post 302769755 by bakunin on Wednesday 13th of February 2013 09:44:47 AM
Old 02-13-2013
A DHCPDISCOVER just means that a newly-born IP interface without an assigned IP address has issued a broadcast. It does NOT mean your server has answered it. As the IP interface does not (and should not) know where the DHCP server is located it can only issue a broadcast and take whatever answer it gets (usually a DHCPACK from a server willing to give out a lease). It is in the nature of broadcasts that every system gets them.

Of course these attempted contacts are logged in the servers log, but this does only mean your log level is high enough to do that. You server still won't give out any leases to these systems. Try to reduce the log level if you don't like these log entries.

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
chebarbudo
 

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LEARN ABOUT FREEBSD

dhclient.leases

DHCLIENT.LEASES(5)					      BSD File Formats Manual						DHCLIENT.LEASES(5)

NAME

     dhclient.leases -- DHCP client lease database

DESCRIPTION

     The Internet Software Consortium DHCP client keeps a persistent database of leases that it has acquired that are still valid.  The database
     is a free-form ASCII file containing one valid declaration per lease.  If more than one declaration appears for a given lease, the last one
     in the file is used.  The file is written as a log, so this is not an unusual occurrence.

     The lease file is named dhclient.leases.IFNAME, where IFNAME represents the network interface the DHCP client acquired the lease on.  For
     example, if dhclient(8) is configured for the em0 network device, the lease file will be named dhclient.leases.em0.

     The format of the lease declarations is described in dhclient.conf(5).

FILES

     /var/db/dhclient.leases.IFNAME  Current lease file.

SEE ALSO

     dhclient.conf(5), dhcp-options(5), dhcpd.conf(5), dhclient(8), dhcpd(8)

     RFC 2132, RFC 2131.

AUTHORS

     The dhclient(8) utility was written by Ted Lemon <mellon@vix.com> under a contract with Vixie Labs.

     The current implementation was reworked by Henning Brauer <henning@openbsd.org>.

BSD
								  January 1, 1997							       BSD
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