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

Sun Jun 9 14:24:27 BST 2013

I don't see that as part of the dhcp options. Add it to dhcp so it gets passed to you clients. 

Obscuring private ip addresses in you messages makes no sense since only your local LAN can access them. No one outside can access them. 

Sent from my iPhone

Don

On Jun 9, 2013, at 9:18 AM, Koos Pol <koos2013 at pohw.nl> wrote:

> 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.
>>> 
>>> 
>>> _______________________________________________
>>> Dnsmasq-discuss mailing list
>>> Dnsmasq-discuss at lists.thekelleys.org.uk
>>> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
> 
> 
> 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.
> 