a question about compile BIND while Creating chroot jail

[hamideh d]

hi ,
the BIND on redhat9 is in form of RPM,i want to create
chroot jail for it,in
http://www.losurs.org/docs/howto/Chroot-BIND.html is
written to compile BIND after making chroot jail,but i
don't have source code for BIND to compile it,what
shoul i do ? uninstalling BIND rpm and install it from
source code?

tnx .

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