Re: Refresh of DNS servers

[Ralf Angeli <dev.null@iwi.uni-sb.de>]

* Derrell Lipman (2004-02-02) writes:

> The name servers are typically listed in /etc/resolv.conf which is one of the
> configuration files for the resolver.  The resolver library [see resolver(3)]
> which most applications that needs DNS services links with, only reads its
> configuration files when res_init() is called, which typically occurs only
> when the very first resolver services are required.  It's likely not gnus
> that's caching the old nameserver, but rather the resolver library in emacs.
> Since emacs is still running, the resolver library is not reinitializing.  I
> don't know of any way to force a reinitialization, although one may exist
> (some signal, possibly).

This sounds reasonable.  Does anybody have a hint where I could start
to look for this stuff?  I grepped the Gnus and Emacs source
directories for "dns", "res_init" and variations of "nameserv" and
"resolv" but this didn't yield a usable result (I only found some
utility functions in `net-utils.el'.  Maybe I missed something?).  I
also tried to dig into `gnus-group-get-new-news' but got lost
somewhere in the middle.

-- 
Ralf