[Dnsmasq-discuss] Can anyone suggest where I should be looking for what's causing this error?

[Chris G]

On Fri, Apr 08, 2011 at 04:50:04PM +0100, Chris G wrote:
> My desktop/server runs as a web server, it serves the domain zbmc.eu.
> 
> It's set up so that local client requests for web pages from zbmc.eu go
> 'out and back' as it were, this way I can be more certain that web pages
> that work locally also work when accessed from outside.
> 
> However sometimes I notice long pauses when displaying web pages so, in
> an attempt to diagnose this I have turned on DNS logging in dnsmasq
> (which runs on another server on my LAN).  Just now I saw this:-
> 
>     Apr  8 16:40:56 dps dnsmasq[22279]: query[AAAA] zbmc.eu from 192.168.1.4
>     Apr  8 16:40:56 dps dnsmasq[22279]: forwarded zbmc.eu to 195.74.113.58
>     Apr  8 16:40:56 dps dnsmasq[22279]: forwarded zbmc.eu to 194.72.0.114
>     Apr  8 16:41:01 dps dnsmasq[22279]: query[AAAA] zbmc.eu.zbmc.eu from 192.168.1.4
>     Apr  8 16:41:01 dps dnsmasq[22279]: forwarded zbmc.eu.zbmc.eu to 195.74.113.58
>     Apr  8 16:41:01 dps dnsmasq[22279]: forwarded zbmc.eu.zbmc.eu to 194.72.0.114
>     Apr  8 16:41:01 dps dnsmasq[22279]: reply zbmc.eu.zbmc.eu is NXDOMAIN-IPv6
>     Apr  8 16:41:01 dps dnsmasq[22279]: query[A] zbmc.eu from 192.168.1.4
>     Apr  8 16:41:01 dps dnsmasq[22279]: forwarded zbmc.eu to 195.74.113.58
>     Apr  8 16:41:02 dps dnsmasq[22279]: reply zbmc.eu is 84.45.228.40
>     Apr  8 16:41:17 dps dnsmasq[22279]: query[A] info.gigaset.net from 192.168.1.129
>     Apr  8 16:41:17 dps dnsmasq[22279]: cached info.gigaset.net is 217.67.103.237
> 
> Those requests for zbmc.eu.zbmc.eu look a bit worrying!  :-)   Can
> anyone suggest what I might have misconfigured such that it would do
> this?  I *think* the particular request(s) that caused this were to
> display some DokuWiki pages, but I'm not absolutely certain.  Is there
> any other sort of logging I can turn on (in apache2 for example) which
> might show me the cause?
> 
Or this sequence:-

    Apr  8 16:56:27 dps dnsmasq[22279]: query[AAAA] zbmc.eu from 192.168.1.4
    Apr  8 16:56:27 dps dnsmasq[22279]: forwarded zbmc.eu to 195.74.113.58
    Apr  8 16:56:27 dps dnsmasq[22279]: forwarded zbmc.eu to 194.72.0.114
    Apr  8 16:56:27 dps dnsmasq[22279]: reply zbmc.eu is NODATA-IPv6
    Apr  8 16:56:27 dps dnsmasq[22279]: query[AAAA] zbmc.eu.zbmc.eu from 192.168.1.4
    Apr  8 16:56:27 dps dnsmasq[22279]: forwarded zbmc.eu.zbmc.eu to 195.74.113.58
    Apr  8 16:56:27 dps dnsmasq[22279]: reply zbmc.eu.zbmc.eu is NXDOMAIN-IPv6
    Apr  8 16:56:27 dps dnsmasq[22279]: query[A] zbmc.eu from 192.168.1.4
    Apr  8 16:56:27 dps dnsmasq[22279]: forwarded zbmc.eu to 195.74.113.58
    Apr  8 16:56:27 dps dnsmasq[22279]: reply zbmc.eu is 84.45.228.40

-- 
Chris Green