dhclient raw socket?

David W. Hankins David_Hankins at isc.org
Thu Jan 18 22:57:39 UTC 2007


On Thu, Jan 18, 2007 at 05:21:25PM -0500, Schmidt, Jolynn wrote:
> I was wonder if dhclient uses a raw socket.  We found this to be the
> case for udhcpc, which causes problems in our environment.  We have a
> high volume UDP broadcast network.  When the raw socket is opened and a
> port is not specified, the amount of UDP traffic on our network over
> whelms udhcpc and it can not get its lease.  I wanted to move to
> dhclient but this will require a lot of work to configure and I wanted
> to know up front if we would run in to the same problem.  Does anyone
> know?

What OS?

On FreeBSD for example the client uses BPF, and installs a filter so
only DHCP packets arrive.

Most other OS have a similar but different mechanism.

-- 
David W. Hankins	"If you don't do it right the first time,
Software Engineer		you'll just have to do it again."
Internet Systems Consortium, Inc.	-- Jack T. Hankins


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