a number of options exist to help you remedy this issue: - bind 9.2.3rc2 supports "delegation-only", stopping some wildcard implementations from making any difference if you simply want to stop traffic getting there (they are running a website and a partially functional MTA on that IP): - you can BGP null route this http://www.merit.edu/mail.archives/nanog/msg13715.html - cisco's NBAR functionality may be used to detect and block those reply packets from coming in by looking for the response from the nameservers. http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121e/121e2/nbar2e.htm note that this wont stop the query from reaching verisign, it will just stop you from going to that IP. however, for some enforcing network privacy concerns, that may be worthwhile. hope this helps, ___________________________ jose nazario, ph.d. jose@monkey.org http://monkey.org/~jose/
