RFC 3442 support in dhcpv4

David Cantrell dcantrell at redhat.com
Wed Dec 17 22:15:30 UTC 2008

David W. Hankins wrote:
> On Wed, Dec 17, 2008 at 09:38:29AM -1000, David Cantrell wrote:
>> Are classless static route options (option 121) supported in
>> dhcpd/dhclient now?  I have found inconsistent information and looking
>> at the code for 4.0.0 and 4.1.0rc1 shows nothing for option 121 support.
>>  Am I looking in the wrong place?
> No formal support; the best is you can define the format of the option
> as an array of unsigned 8-bit integers, and use contrived dhcpd.conf
> tab indents and newlines to make clear all the fields in each route
> entry.
> This makes it a bit harder to use in the client...it's hard to express
> a list of routes like this as a text string suitable for sh-script for
> loops, even with formal support for the option format.  It's the kind
> of thing that makes me wish our config values were expressed in XML
> (or something) instead of flat environment variables.

Any plans to add the support to dhcp?  I found this patch (a bit old):


Which seems to implement it to some degree.

David Cantrell <dcantrell at redhat.com>
Red Hat / Honolulu, HI

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