The Domain Name Relay Daemon (DNRD) is a simple "proxy" nameserver. It is meant to be used for home networks that can connect to the internet using one of several ISP's.
DNRD is pretty simple. It takes DNS queries from hosts, and forwards them to the "real" DNS server. It takes DNS replies from the DNS server, and forwards them to the client. What makes DNRD special is that it can be configured to forward to different DNS servers depending on what ISP you are dialing.
Before DNRD, there was no easy way to change the default nameserver on a Linux system. You can play games with /etc/resolv.conf, such as copying other versions of this file in place depending on which ISP you're dialing into, but that is a pain. Instead, you can run DNRD on your dial-up machine. Whenever you dial into an ISP, run dnrd with the appropriate DNS server as an argument. Here's an example of how you would run it:
dnrd -s 188.8.131.52
DNRD was originally designed to work in conjuction with mserver. It works very well with mserver, but works just fine with other dialup systems as well as in other non-dialup environments.
This package contains startup scripts which have been adapted for AIX.
Current version: v2.20.3-2