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<p class=MsoNormal><span style='color:#1F497D'>Never mind. I did some further
testing and I do not think it’s a dnsmasq issue. I think it’s a
WINS issue. On the 509 the resolve order is wins bcast host. So I stopped and
started smb (samba) on the 639 and I could then ping the 639 from the 509 with
proper resolution. It looks like when it gets its new address from the dhcp
server it is not registering it in WINS and replacing the original entry.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Don<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> dnsmasq-discuss-bounces@lists.thekelleys.org.uk
[mailto:dnsmasq-discuss-bounces@lists.thekelleys.org.uk] <b>On Behalf Of </b>Don
Muller<br>
<b>Sent:</b> Monday, May 10, 2010 9:50 PM<br>
<b>To:</b> dnsmasq-discuss@lists.thekelleys.org.uk<br>
<b>Subject:</b> [Dnsmasq-discuss] Strange problem<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I am having a strange problem that I think might be related
to dnssmasq. Sorry for the length of this but you need the background.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have a nas (QNAP TS-509) that is my main server. It runs
linux and a number of apps one of which is dnsmasq. I use the dns and dhcp
features. I have another nas (QNAP TS-639), which also runs linux, which
I use for testing and backups. The 639 has a reservation in dnsmasq. This
server is usually off. I have a script on the 509 that wakes the 639, does an
rsync, and then shuts the 639 down. I was testing a new wakenas script when I
ran into a problem. The way the new wakenas script works is like this:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>1 - ping the 639 to see if it responds.<o:p></o:p></p>
<p class=MsoNormal>2 - if it responds<o:p></o:p></p>
<p class=MsoNormal>
2a - echo message that the 639 is up.<o:p></o:p></p>
<p class=MsoNormal>
2b - exit.<o:p></o:p></p>
<p class=MsoNormal>3 - if no response<o:p></o:p></p>
<p class=MsoNormal>
3a - issue wake on lan command <o:p></o:p></p>
<p class=MsoNormal>
3b - start loop - loop 21 times<o:p></o:p></p>
<p class=MsoNormal>
4 - ping 639<o:p></o:p></p>
<p class=MsoNormal>
5 - if responds <o:p></o:p></p>
<p class=MsoNormal>
5a - echo message that the 639 is up<o:p></o:p></p>
<p class=MsoNormal>
5b - exit<o:p></o:p></p>
<p class=MsoNormal>
6 - sleep 10<o:p></o:p></p>
<p class=MsoNormal>
3c - end loop<o:p></o:p></p>
<p class=MsoNormal>
3d - echo message that the 639 is not up<o:p></o:p></p>
<p class=MsoNormal>
3e - exit<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>So basically if the 639 is not up it attempts to wake it and
waits a max of 3.5 minutes to see if it is up. The script works except that it
reports that the 639 is not up when in fact it did start it. If I ping the 639
by its name from a terminal session on the 509 it returns an address of
169.254.100.100 when in fact the address of the 639 as assigned by the 509 is
192.168.22.242. If I ping it by its fqdn the correct address is returned. I
think what is happening is that when the 639 is turned on and it first connects
to the network it is connecting with the address of 169.254.100.100. It then
issues the dhcp request and gets assigned the correct address but somehow the
old address is still cached somewhere.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Some other info about the network. The 509 is also a wins
server and the 639 is a wins client. Both the 509 & 639 and two 1gb
ethernet connections that are bound into a single connection using 802.3ad.
They are connected to a Cisco 2960g switch which is configured to bind the
ports from each server into a single 802.3ad trunk.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>So how can I determine if the problem is with dnsmasq? What
logging should I turn on and what should I be looking for in the logs?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Here is the dnsmasq configuration:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>#
Our log settings<o:p></o:p></p>
<p class=MsoNormal>log-facility=/share/MD0_DATA/apps/logs/dnsmasq.log<o:p></o:p></p>
<p class=MsoNormal>log-queries<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>#
Our DNS settings<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>domain-needed<o:p></o:p></p>
<p class=MsoNormal>expand-hosts<o:p></o:p></p>
<p class=MsoNormal>
<o:p></o:p></p>
<p class=MsoNormal>bogus-priv<o:p></o:p></p>
<p class=MsoNormal>filterwin2k<o:p></o:p></p>
<p class=MsoNormal>resolv-file=/etc/config/user/dnsmasq-resolv.conf<o:p></o:p></p>
<p class=MsoNormal>
<o:p></o:p></p>
<p class=MsoNormal>#clear-on-reload<o:p></o:p></p>
<p class=MsoNormal>stop-dns-rebind<o:p></o:p></p>
<p class=MsoNormal>user=xxxxx<o:p></o:p></p>
<p class=MsoNormal>group=yyyyyyy<o:p></o:p></p>
<p class=MsoNormal>no-hosts
<o:p></o:p></p>
<p class=MsoNormal>addn-hosts=/etc/config/user/dnsmasq-hosts.conf<o:p></o:p></p>
<p class=MsoNormal>domain=djmuller.com<o:p></o:p></p>
<p class=MsoNormal>cache-size=1000
<o:p></o:p></p>
<p class=MsoNormal>local-ttl=600
<o:p></o:p></p>
<p class=MsoNormal>neg-ttl=600<o:p></o:p></p>
<p class=MsoNormal>mx-target=mail.djmuller.com<o:p></o:p></p>
<p class=MsoNormal>localmx<o:p></o:p></p>
<p class=MsoNormal>#
address=/adbrite.com/127.0.0.1
<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>#
Our dhcp settings<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>dhcp-range=192.168.22.1,192.168.22.50,24h<o:p></o:p></p>
<p class=MsoNormal>dhcp-option=vendor:MSFT,2,1i<o:p></o:p></p>
<p class=MsoNormal>dhcp-leasefile=/share/MD0_DATA/apps/dnsmasq/dnsmasq.leases<o:p></o:p></p>
<p class=MsoNormal>dhcp-authoritative<o:p></o:p></p>
<p class=MsoNormal>dhcp-hostsfile=/share/MD0_DATA/apps/config/dnsmasq/dnsmasq-dhcp-reservations.conf<o:p></o:p></p>
<p class=MsoNormal>dhcp-optsfile=/share/MD0_DATA/apps/config/dnsmasq/dnsmasq-dhcp-options.conf<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>#
ad servers contained in additional configuration file<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>conf-file=/share/MD0_DATA/apps/config/dnsmasq/dnsmasq-adservers.conf
# just contains address=/domain/ip entries for ad servers<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I hope I have explained my problem so that you understand
it.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks<o:p></o:p></p>
<p class=MsoNormal>Don<o:p></o:p></p>
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