RE: dns lookup problem

[Paulo Schopf <pschopf yahoo com br>]

 --- "Cowles, Steve" <steve stevecowles com> escreveu:
> Paulo Schopf wrote:
> > I have redhat 9 and im in trouble to fix a reverse
> dns lookup problem.
> > 
> > file /etc/nsswitch.conf:
> > hosts: files dns
> > 
> > file /etc/host.conf:
> > order hosts,bind
> > 
> > file /etc/hosts:
> > 127.0.0.1 localhost.localdomain localhost
> > 192.168.0.25 machine1
> > 
> > file /etc/resolv.conf:
> > nameserver 192.168.1.1 <-- adsl modem
> > 
> > if I try to telnet my server (192.168.0.100) from
> > 192.168.0.25 when modem is down, I have a long
> delay to receive a
> > prompt. 
> > 
> > This problem is listed in
> >
>
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=57998
> > 
> > Anyone have a workaround to solve that? I dont
> have
> > bind/dns server or nis (and dont want to have
> them).
> 
> All I can do is confirm the problem your having.
> Certain applications
> (especially those that run in a chrooted
> environment) gave me the most
> problems, but could be fixed my editing the chrooted
> copy of the /etc/hosts
> file. Once I discovered that, the solution to this
> problem seemed clear. I
> implemented my own DNS server to run on my local
> LAN. There was no way I was
> going to maintain multiple copies of /etc/hosts for
> each chrooted
> application running on my server.
> 
> Steve Cowles
> 

Im afraid it doesnt have an easy solution.

"The fix involves a rewrite of a part of glibc, and
glibc developers have deemed that a low-priority item.

The issue cannot be worked around.  Well, you could
try to add something like 'hostname ::1', where
hostname would be the node you wish to 
connect to, in /etc/hosts, but I doubt it works as you
expect." (in
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=57998)

I dont know why this bug has no fix until today. I
think its very important. My clients is talking about
this slow performance when link is down, every week! I
would like to have a workaround, easy to install. Or a
patch, maybe.


Paulo

> 
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