dhclient options in dispatcher scripts

[Nick Palamarchuk <lupinedreamer gmail com>]

Hello,

I want to write some dispatcher scripts to add classless static routes support for my connection. 

Some time ago I did it using dhclient exit-hooks script. But now NM doesn't support them any more. 
So, the only true way is to use NM dispacher scripts? But how can I get dhclient options from that script?