System Information Record (HINFO)(转)

http://www.zytrax.com/books/dns/ch8/hinfo.html

Allows definition of the Hardware type and Operating System (OS) in use at a host. For security reasons these records are rarely used on public servers. If a space exists in the field it must be enclosed in quotes. Single space between CPU and OS parameters.

name  ttl  class   rr      Hardware        OS

           IN      HINFO   PC-Intel-700mhz "Redhat Linux 7.1"

name can be empty!