Based on patches by Johan Bilien <jobi@via.ecp.fr>,
nick loeve <trickie@gmail.com>, and Roy Marples <roy@marples.name>
with significant changes for dhclient formatting and test cases.
Note that dhclient needs help before it can actually parse
classless static routes by adding the following to the
dhclient.conf file:
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
