ping problems with BIND9

[Gregory Hicks]

> Date: Thu, 2 Dec 2004 08:50:31 +1300 (NZDT)
> Subject: Re: ping problems with BIND9
> From: "Kerry Thompson" <kerry at security.geek.nz>
> To: bind-users at isc.org
> 
> That delay sounds like its searching for the domain, in other words the
> client system doesn't know what domain its in.
> Try pinging the fully qualified domain name eg.
> machinename.your_domain.tld, and/or adding a 'domain' statement into
> /etc/resolv.conf:
> 
>   domain your_domain.tld

Also try putting a fully qualified domain name in /etc/hosts instead of
just the "short" name...

> 
> Kerry
> 
> 
> Mike Branda said:
> > Kerry,
> >
> > here's what's in nsswitch.conf.  it already had dns in the hosts and
> > networks lines.  What's strange is that if I remove the nameserver from
> > resolv.conf, when I do "ping machinename" it immediately returns "ping:
> > unknown host machinename". But when the nameserver is there, it takes
> > about 15 seconds to return the same message.
> >
> > Mike
> >
> > On Wed, 2004-12-01 at 13:56, Kerry Thompson wrote:
> >> Mike
> >> Some information on what the client OS is would help.
> >>
> >> (taking a punt that they are *nix) It sounds like the clients have
> >> /etc/resolv.conf configured, but /etc/nsswitch.conf hasn't got "dns"
> >> configured for hosts lookups. A key difference between dig/host and
> >> vanilla commands ( ping, telnet ) are that dig goes straight to
> >> resolv.conf to find DNS servers, whereas ping uses normal libraries to
> >> read nsswitch.conf then oges to resolv.conf
> >>
> >> Kerry
> >>
> >>
> >> Mike Branda said:
> >> > O.K. here goes.  after muddling around for a bit now I am out of ideas
> >> > as to why this isn't working.  I have set up an internal only domain
> >> > "my.fakedomain.local" and am having a minor issue.  I can use dig from
> >> > the dns server to any machine listed in the zone and get the proper
> >> > answer and can do the same from any client machine as well as reverse
> >> > lookups.  The caching from external web servers works also.  What I am
> >> > having an issue with is that I can ping by IP and hostname for the
> >> local
> >> > network machines from the dns box itself but pings only work by IP
> >> from
> >> > the clients.  Again, dig works on both dns and clients for local
> >> machine
> >> > name lookups.  Any ideas why I can't ping hostnames from clients??
> >> >
> >> > Thanks.
> >> >
> >> > Mike
> >
> >
> >
> 
> 

-------------------------------------------------------------------
Gregory Hicks                        | Principal Systems Engineer
Cadence Design Systems               | Direct:   408.576.3609
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