Intermittent outages

[Mark_Andrews at isc.org]

	This sounds like you are using private address space and don't
	have a default route set on your machine.  You might want to
	set "forward only;" in addition to a forwarders clause.

	Mark

> 
> John Anderson wrote:
> 
> > Hi,
> >
> > I'm getting this message in my logs, and I'm not sure what it means:
> >
> > localhost named[468]: sysquery: sendto([193.0.14.129].53): Network is
> > unreachable
> 
> Named is just reporting what it gets from the lower levels of the
> networking code. Looks like you have a connectivity problem of some sort.
> 
> > (Also, the IP address changes, I've seen 193.0.14.129 and
> > 192.203.230.10)
> 
> Those are addresses of a couple of the Internet root nameservers. You're
> apparently having problems talking to them.
> 
> > I'm running Bind 8.2.2 on RedHat Linux 6.2.
> 
> You should upgrade immediately. That version of BIND has horrible security
> holes.
> 
> >
> >
> > I've also seen some intermittent downtime on the zones I host on that
> > server, named is still running, but maybe one of my domain names is
> > unaccessible, or maybe mail.domain.com is not available, yet
> > www.domain.com is.
> >
> > I haven't been able to pin down a message in the logs that correlate
> > with these mysterious outages, so I'm not sure what I can tell you about
> > them.
> 
> These problems may be indirectly related to your connectivity problem. I'd
> attack that one first.
> 
> 
> - Kevin
> 
> 
> 
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org