I told the potential sponsor I would do this for free for Deadwood (since I still add security enhancing features to Deadwood at my discretion for free), and gave them a quote for me to add this to MaraDNS 1.4, explaining I would not be able to start until this week because I was planning my wedding last week. They expressed interest in paying me, but have not done so yet. Hopefully, I will get some pocket change implementing this for MaraDNS 1.4; in the meantime, it has been implemented for Deadwood, and can be seen here:
I have implemented and documented this parameter, and have modified all SQA tests to have filter_rfc1918 = 0 in them.
Next: Test this change; not only do I have to make sure this hasn't broken any existing SQA tests, I also have to make a SQA test for this parameter, called filter_rfc1918