bind and DLZ support

[fddi]

Hello,
I was trying to add DLZ support to bind on CentOS 5.5 so it's 
bind-9.3.6-4.P1.el5_5

I found out that the CentOS rpm does not have DLZ support built in and 
trying to patch bind manually
the patch looks like to be for 9.2.2 version so it does not work on 9.3.6

anyone has a solution on how to add DLZ support to stock CentOS bind, or 
to add DLZ patch support
to any recent bind version ?

thank you

Rick