[Dnsmasq-discuss] Unable to resolve public/external hostnames

[Koos Pol]

Op 09-06-13 15:16, Don Muller schreef:
> What is the address of the server running DNSMASQ? Unless I missed it it doesn't look like you include it in your DHCP options.  
> 
> Don

Thanks Don. Perhaps a bit burried away:
dns1     : x.x.x.50



> 
> On Jun 9, 2013, at 3:31 AM, Koos Pol <koos2013 at pohw.nl> wrote:
> 
>> Goodmorning all,
>>
>>
>> I've shot myself in the foot by purchasing a new router without a DNS *server*
>> aboard (Netgear WNDR4500). (For which I'm now in a lengthy, difficult
>> discussion with Netgear support. Why doesn't a consumer grade router doesn't
>> do local name resolution? But that's an entire different subject)
>>
>> Since the router doesn't have a DNS server aboard, I thought to use dnsmasq
>> for local LAN name resolution. (Saves me from deploying hosts files all over
>> the place.)
>>
>> The problem is that local name resolution works like a charm, but I can't get
>> external/public resolution to work. Pinging to public IPs works fine. It's the
>> name resolution which fails.
>>
>> Here's my setup (small home lan):
>>
>> LAN: 192.168.1.255/24
>> Router/gw: x.x.x.1
>> dns1     : x.x.x.50
>>
>>
>> On dns1 I have the following configuration:
>> /etc/dnsmasq.conf:
>> resolv-file=/etc/resolv.dnsmasq
>> domain-needed
>> bogus-priv
>> domain=lan.pohw.nl
>> expand-hosts
>> local=/lan.pohw.nl/
>> dhcp-option=option:router,192.168.1.1
>> dhcp-range=192.168.1.100,192.168.1.200
>> log-queries
>>
>> /etc/resolv.dnsmasq:
>> nameserver 8.8.8.8
>> nameserver 8.8.4.4
>>
>>
>> client1 is configured as follows:
>> /etc/resolv.conf:
>> nameserver 192.168.1.50
>>
>>
>> Pinging from client1 to a public IP works fine:
>> client1:/home/koos # ping -c 3 62.69.166.18
>> PING 62.69.166.18 (62.69.166.18) 56(84) bytes of data.
>> 64 bytes from 62.69.166.18: icmp_seq=1 ttl=248 time=6.00 ms
>> 64 bytes from 62.69.166.18: icmp_seq=2 ttl=248 time=5.94 ms
>> 64 bytes from 62.69.166.18: icmp_seq=3 ttl=248 time=5.60 ms
>>
>> But pinging to a public hostname doesn't:
>> client1:/home/koos # ping -c 3 www.nu.nl
>> ping: unknown host www.nu.nl
>>
>> The dnsmasq log is as follows:
>> Jun  9 08:50:52 dns1 dnsmasq[1435]: dnsmasq: syntax check OK.
>> Jun  9 08:50:52 dns1 dnsmasq[1438]: started, version 2.61 cachesize 150
>> Jun  9 08:50:52 dns1 dnsmasq[1438]: compile time options: IPv6 GNU-getopt
>> no-DBus i18n IDN DHCP DHCPv6 no-Lua TFTP no-conntrack
>> Jun  9 08:50:52 dns1 dnsmasq[1438]: DBus support enabled: connected to system bus
>> Jun  9 08:50:52 dns1 dnsmasq-dhcp[1438]: DHCP, IP range 192.168.1.100 --
>> 192.168.1.200, lease time 1h
>> Jun  9 08:50:52 dns1 dnsmasq[1438]: using local addresses only for domain
>> lan.pohw.nl
>> Jun  9 08:50:52 dns1 dnsmasq[1438]: reading /etc/resolv.dnsmasq
>> Jun  9 08:50:52 dns1 dnsmasq[1438]: using nameserver 8.8.4.4#53
>> Jun  9 08:50:52 dns1 dnsmasq[1438]: using nameserver 8.8.8.8#53
>> Jun  9 08:50:52 dns1 dnsmasq[1438]: using local addresses only for domain
>> lan.pohw.nl
>> Jun  9 08:50:52 dns1 dnsmasq[1438]: read /etc/hosts - 8 addresses
>> Jun  9 08:51:45 dns1 dnsmasq-dhcp[1438]: DHCPDISCOVER(eth0) 08:00:27:c7:bc:61
>> Jun  9 08:51:45 dns1 dnsmasq-dhcp[1438]: DHCPOFFER(eth0) 192.168.1.154
>> 08:00:27:c7:bc:61
>> Jun  9 08:51:45 dns1 dnsmasq-dhcp[1438]: DHCPREQUEST(eth0) 192.168.1.154
>> 08:00:27:c7:bc:61
>> Jun  9 08:51:45 dns1 dnsmasq-dhcp[1438]: DHCPACK(eth0) 192.168.1.154
>> 08:00:27:c7:bc:61 client1
>> Jun  9 08:52:08 dns1 dnsmasq[1438]: query[PTR] 101.1.168.192.in-addr.arpa from
>> 192.168.1.154
>> Jun  9 08:52:08 dns1 dnsmasq[1438]: config 192.168.1.101 is NXDOMAIN-IPv4
>> Jun  9 08:53:45 dns1 dnsmasq[1438]: query[A] www.nu.nl from 192.168.1.154
>> Jun  9 08:53:45 dns1 dnsmasq[1438]: query[A] www.nu.nl from 192.168.1.154
>> Jun  9 08:53:45 dns1 dnsmasq[1438]: query[A] www.nu.nl.lan.pohw.nl from
>> 192.168.1.154
>> Jun  9 08:53:45 dns1 dnsmasq[1438]: config www.nu.nl.lan.pohw.nl is NXDOMAIN-IPv4
>>
>>
>> I'd appreciate any help!
>>
>> Many thanks.
>> Koos
>>
>>
>> PS: The thread explaining a similar problem is here[1]. I've read it through
>> but none of the suggestions worked for me.
>>
>> [1] http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2011q3/005199.html
>>
>> -- 
>> http://www.malarianomore.org
>> For $10 a mosquito net + distribution + education + monitoring + evaluation.
>>
>>
>> _______________________________________________
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>> Dnsmasq-discuss at lists.thekelleys.org.uk
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Cheers,
Koos

-- 
http://www.malarianomore.org
For $10 a mosquito net + distribution + education + monitoring + evaluation.

Met vriendelijke groet,
Koos Pol

-- 
http://www.malarianomore.org
Voor $10,= een muskietennet + distributie + voorlichting + nazorg + evaluatie.