Hi,

I know that you have probably already seen several RFC 3442 (The 
Classless Static Route Option) implementation requests.
For example this one 
https://lists.isc.org/pipermail/dhcp-users/2008-December/007638.html
but I'll add one more.

Today Red Hat Enterprise Linux (RHEL) 6.1 has been released
and the ISC dhcp shipped with it contains (my) implementation of RFC3442,
because it had been requested by several customers.
The ISC dhcp in Fedora distribution (something like unstable RHEL)  has 
been shipped with this implementation since August 2010.

I'm not sending patches this time because I know they are not perfect 
and that you would implement it in
your own way, so here are only the git commits for your inspiration:
http://pkgs.fedoraproject.org/gitweb/?p=dhcp.git;a=commitdiff;h=fe8e8224b5cbd10550a02c6427f388cc34b4274e
http://pkgs.fedoraproject.org/gitweb/?p=dhcp.git;a=commitdiff;h=f26a061db4b8aa6e8034c84a66b46e7c79d63072

But I can of course create and attach patch against the latest ISC dhcp 
version on demand.

Fedora ticket (just for info)
https://bugzilla.redhat.com/show_bug.cgi?id=516325

with regards,
Jiri Popelka
Red Hat, inc.