I plan to put all of the source  here shortly-

   A few people have asked me for the source of dnrd (A modified version of domain name relay daemon)
I started with code from dnrd version 1.3 which is under the usual gnu source license. I modified the code to
1- To scan resolve.conf for name severs.
2- To try the other names if one fails, and
3- To retry failed names in case they finally come back up.
click here for the source dnrd.tar

Click here for the source of the setup tool setup.c