[kwlug disc.] www.google.ca does not resolve
Khalid Baheyeldin
kb at 2bits.com
Sat Aug 16 16:49:27 EDT 2008
Just to rule out Rogers as the cause ...
Add this to your /etc/resolv.conf
# OpenDNS servers
nameserver 208.67.222.222
nameserver 208.67.220.220
Then try again, and see if there is any difference.
On Sat, Aug 16, 2008 at 3:41 PM, Paul Nijjar <paul_nijjar at yahoo.ca> wrote:
> We are having the weirdest problems accessing Glenn's favourite
> non-evil search engine. As far as I know it is only affecting google.
> The DNS entries for www.google.ca are not resolving properly. The
> problem is intermittent: yesterday Google stopped resolving, and then
> later in the evening it worked, and then it has been failing again
> today.
>
> The setup is as follows: we have an IPCop box (version 1.4.21 with an
> IP of 192.168.1.2) which sits between Rogers DNS (64.71.255.198) and
> our local intranet (we have Windows 2003 servers that point to IPCop
> for resolution, but I think they are not relevant here). I think
> something is broken with IPCop. The DNS entries for www.google.ca are
> not resolving properly. Here is some output. First I look up Google on
> the IPCop box, and then I use Rogers:
>
>
> ====================
>
> pnijjar at 66bf-pauln2:~$ dig www.google.ca
>
> ; <<>> DiG 9.5.0-P1 <<>> www.google.ca
> ;; global options: printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5526
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;www.google.ca. IN A
>
> ;; ANSWER SECTION:
> www.google.ca. 12518 IN CNAME www.google.com.
> www.google.com. 85027 IN CNAME www.l.google.com.
>
> ;; Query time: 5 msec
> ;; SERVER: 192.168.1.5#53(192.168.1.5)<http://192.168.1.5#53%28192.168.1.5%29>
> ;; WHEN: Sat Aug 16 15:27:45 2008
> ;; MSG SIZE rcvd: 79
>
>
>
>
> ====================
>
> pnijjar at 66bf-pauln2:~$ dig @64.71.255.198 www.google.ca
>
> ; <<>> DiG 9.5.0-P1 <<>> @64.71.255.198 www.google.ca
> ; (1 server found)
> ;; global options: printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46963
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 7, ADDITIONAL: 7
>
> ;; QUESTION SECTION:
> ;www.google.ca. IN A
>
> ;; ANSWER SECTION:
> www.google.ca. 12502 IN CNAME www.google.com.
> www.google.com. 444490 IN CNAME www.l.google.com.
> www.l.google.com. 297 IN A 72.14.205.147
> www.l.google.com. 297 IN A 72.14.205.99
> www.l.google.com. 297 IN A 72.14.205.103
> www.l.google.com. 297 IN A 72.14.205.104
>
> ;; AUTHORITY SECTION:
> l.google.com. 86358 IN NS c.l.google.com.
> l.google.com. 86358 IN NS d.l.google.com.
> l.google.com. 86358 IN NS e.l.google.com.
> l.google.com. 86358 IN NS f.l.google.com.
> l.google.com. 86358 IN NS g.l.google.com.
> l.google.com. 86358 IN NS a.l.google.com.
> l.google.com. 86358 IN NS b.l.google.com.
>
> ;; ADDITIONAL SECTION:
> c.l.google.com. 86358 IN A 64.233.161.9
> d.l.google.com. 86358 IN A 66.249.93.9
> e.l.google.com. 86358 IN A 209.85.137.9
> f.l.google.com. 86358 IN A 72.14.235.9
> g.l.google.com. 86358 IN A 64.233.167.9
> a.l.google.com. 86358 IN A 209.85.139.9
> b.l.google.com. 86358 IN A 64.233.179.9
>
> ;; Query time: 20 msec
> ;; SERVER: 64.71.255.198#53(64.71.255.198)<http://64.71.255.198#53%2864.71.255.198%29>
> ;; WHEN: Sat Aug 16 15:25:06 2008
> ;; MSG SIZE rcvd: 367
>
>
> ====================
>
> What am I doing wrong (other than having no business administrating a
> network in the first place)?
>
> I imagine that there is something weird going on with the DNS caching
> in the IPCop box, but I am not sure what I should be looking for.
> The IPCop web interface is not so useful. I guess I will have to SSH
> in and poke around, but this is all pretty deep magic to me
> (especially if IPCop is running BIND). Do you have any quick fixes or
> advice for me?
>
> - Paul
>
>
>
>
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--
Khalid M. Baheyeldin
2bits.com, Inc.
http://2bits.com
Drupal optimization, development, customization and consulting.
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