net/host 20070128nb1 NetBSD

Host is a very powerful DNS query and testing command-line tool. Major differences with the ancient version of the program with the same name that's included in the BIND-4 and BIND-8 distributions:

• Major overhaul of the entire code including rigid error checking, and verbose error messages. Several sections have been rewritten from scratch. Documentation has been added. Syntax extended.
• It is now possible to do recursive listings into delegated zones.
• Maintain resource record statistics and host count during zone listings.
• Check for various extraneous conditions during zone listings.
• Check for illegal domain names containing invalid characters.
• Verify that certain domain names represent canonical host names.
• Perform ttl consistency checking during zone listings.
• Exploit multiple server addresses if available.
• Option to exploit only primary server for zone transfers.
• Option to exclude info from names that do not reside in a zone.
• Implement timeout handling during connect and read.
• Write resource record output to optional log file.
• Special MB tracing by recursively expanding MR and MG records.
• Special mode to check SOA records at each nameserver for a zone.
• Special mode to check reverse mappings of host addresses.
• Configurable default options in HOST_DEFAULTS environment variable.
• Implement new resource record types from RFCs 1183, 1348, 1664, 1712, 1876 and 1886. Basic experimental NSAP support as defined in RFC 1637.