ICMP host name utilities

Since the Linux kernel does not support the ICMP host name facilities as described in RFC 1788, I wrote a simple implementation in user-space. It comprises three parts:

General information

The NSS module caches all requests (including failures) and honors the TTL value sent by the responding host. It uses a configuration file called /etc/nss-icmp.conf, which controls different aspects of its operation:

Both icmpdnd and idnlookup need to run as root, due to the fact that they use ICMP. Thus, idnlookup needs be installed SUID root.


Thanks to Oron Peled, there is now a full autoconf/automake package for these tools, along with an RPM package for systems that use RPM. Pick your choice:

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Author: Fredrik Tolf <fredrik@dolda2000.com>
Last changed: Fri Jan 13 02:42:50 2006