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DNSMasq for web DNS caching only

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giuliomagnifico
DD-WRT User

Joined: 11 Apr 2016
Posts: 454
Location: Italy

Posted: Fri May 20, 2016 23:22 Post subject: DNSMasq for web DNS caching only

Hi,
I have some troubles with DNSmasq, I would use it only for caching DNS (not local) and speed up the web browsing. I have disabled the DHCP server in the main page and enable DNSmasq in the services tab with these simply options:

But it seems to doesn't work:

Code:

Giulios-iMac:~ Home$ dig google.it | grep "Query time"
;; Query time: 46 msec
Giulios-iMac:~ Home$ dig google.it | grep "Query time"
;; Query time: 57 msec
Giulios-iMac:~ Home$ dig google.it | grep "Query time"
;; Query time: 35 msec
Giulios-iMac:~ Home$

and I have no /etc/dnsmasq.conf file but from the Syslog the daemon is started...

router ARCHER-C7 v2
release r29739

Thsnks fot the help!

Last edited by giuliomagnifico on Sun May 22, 2016 17:55; edited 2 times in total

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tatsuya46
DD-WRT Guru

Joined: 03 Jan 2010
Posts: 7568
Location: YWG, Canada

Posted: Fri May 20, 2016 23:31 Post subject:

if i get it correctly i think dnsmasq+unbound is what u want, on index.asp page recursive dns resolving enabled it, if that router has the option. try that
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giuliomagnifico
DD-WRT User

Joined: 11 Apr 2016
Posts: 454
Location: Italy

Posted: Fri May 20, 2016 23:37 Post subject:
Umh no, unfortunately I don't have the recursive dns resolving option! All I want is only to the have the dnsmasq.conf file and service, in order that when I type "www.google.com" it saves the ip in the DNSmasq file and the browser doens't need to look up/translate the google.com address in 172.217.19.68. This thing: http://openrent.blogspot.it/2006/12/speed-up-your-browsing-with-dd-wrt.html

tatsuya46
DD-WRT Guru

Joined: 03 Jan 2010
Posts: 7568
Location: YWG, Canada

Posted: Fri May 20, 2016 23:42 Post subject:

try with dnsmasq local dns on
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BrainSlayer wrote:

we just do it since we do not like any restrictions enforced by stupid cocaine snorting managers

giuliomagnifico
DD-WRT User

Joined: 11 Apr 2016
Posts: 454
Location: Italy

Posted: Fri May 20, 2016 23:49 Post subject:

Code:

root@DD-WRT:~# ls /etc/
TZ group ld.so.cache preinit
cert.pem hosts ld.so.conf privkey.pem
cidrroute.sh hotplug2-common.rules lease_update.sh privoxy
comgt hotplug2-createmtd.sh minidlna.conf profile
config hotplug2.rules motd protocols
cron.d hotplug2.startup nocat.conf resolv.conf
defaults.bin hso nvram services
dhcp6c.conf init.d openser terminfo
dhcp6s.conf ipkg.conf openvpnlog.sh vpnc
dictionary issue openvpnstate.sh wifidog-msg.html
dictionary.microsoft kaid openvpnstatus.sh www
ethertypes key.pem passwd xl2tpd
freeradius l7-protocols port-id-map
fstab langpack postinit

no...it doesn't works Sad

Code:

root@DD-WRT:~# killall -sigusr1 dnsmasq
root@DD-WRT:~#

no dnsmaq.conf file and no service running...

tatsuya46
DD-WRT Guru

Joined: 03 Jan 2010
Posts: 7568
Location: YWG, Canada

Posted: Fri May 20, 2016 23:53 Post subject:

i think u have to have dhcp enabled for dnsmasq to run, then also check use dnsmasq for dhcp. if u really cant live with dhcp on or have another dhcp server, u can try using dhcp forwarder as well.
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BrainSlayer wrote:

we just do it since we do not like any restrictions enforced by stupid cocaine snorting managers

giuliomagnifico
DD-WRT User

Joined: 11 Apr 2016
Posts: 454
Location: Italy

Posted: Sat May 21, 2016 0:04 Post subject:
Ok, I can use the dhcp server, but it's the same, no dnsmasq.conf file also after a reboot and no dnsmasq service active...

giuliomagnifico
DD-WRT User

Joined: 11 Apr 2016
Posts: 454
Location: Italy

Posted: Sat May 21, 2016 0:09 Post subject:

Wait, I have the file in /tmp...

Code:

root@DD-WRT:~# cat /tmp/dnsmasq.conf
interface=br0
resolv-file=/tmp/resolv.dnsmasq
all-servers
strict-order
stop-dns-rebind
cache-size=10000

Code:

root@DD-WRT:~# /bin/ps | grep [d]nsmasq
12024 root 1920 S dnsmasq -u root -g root --conf-file=/tmp/dnsmasq.conf --cache-

but why not the caching file in /etc?!

Mile-Lile
DD-WRT Guru

Joined: 24 Feb 2013
Posts: 1634
Location: Belgrade

Posted: Sat May 21, 2016 5:03 Post subject:

if you want to speed up web browsing remove:

Code:

strict-order
stop-dns-rebind
cache-size=10000

add

Code:

query-port=0

tell me doest it make difference?

giuliomagnifico
DD-WRT User

Joined: 11 Apr 2016
Posts: 454
Location: Italy

Posted: Sat May 21, 2016 5:41 Post subject:
I don't know if there are differences because it doesn't work! DNSMasq doesn't create the dnsmas.conf file inside /etc (with the saved ip/urls) so is the same, I can write what options I want... The point is why it doesn't work?

giuliomagnifico
DD-WRT User

Joined: 11 Apr 2016
Posts: 454
Location: Italy

Posted: Sat May 21, 2016 13:32 Post subject:
Someone know why if I enable dnsmasq, the daemon does nothing, it doesn't create its config file under /etc? The dnsmasq.conf? Can I create it by myself? (but I'm pretty sure it wouldn't work the same...) Thanks

giuliomagnifico
DD-WRT User

Joined: 11 Apr 2016
Posts: 454
Location: Italy

Posted: Sat May 21, 2016 21:20 Post subject:

Mile-Lile wrote:

if you want to speed up web browsing remove:

Code:

strict-order
stop-dns-rebind
cache-size=10000

add

Code:

query-port=0

tell me doest it make difference?

Iust for cruosity I've done it, I've enabled also the dhcp and "use dnsmasq for dhcp".... but obviously no differences... the DNSMasq service seems to still doesn't work.

Code:

root@DD-WRT:~# cat /tmp/dnsmasq.conf
interface=br0
resolv-file=/tmp/resolv.dnsmasq
all-servers
dhcp-leasefile=/tmp/dnsmasq.leases
dhcp-lease-max=50
dhcp-option=br0,3,192.168.1.2
dhcp-range=br0,192.168.1.3,192.168.1.52,255.255.255.0,1440m
query-port=0

Code:

Giulios-iMac:~ Home$ dig google.it | grep "Query time"
;; Query time: 34 msec
Giulios-iMac:~ Home$ dig google.it | grep "Query time"
;; Query time: 34 msec
Giulios-iMac:~ Home$ dig google.it | grep "Query time"
;; Query time: 16 msec

And I'm sure the daemon is running (but I don't what is doing Very Happy

)

Code:

root@DD-WRT:~# grep dnsmasq /var/log/messages
Jan 1 00:00:14 DD-WRT user.info : dnsmasq : dnsmasq daemon successfully started
May 21 21:10:03 DD-WRT user.info : dnsmasq : dnsmasq daemon successfully stopped
May 21 21:10:03 DD-WRT user.info : dnsmasq : dnsmasq daemon successfully started
May 21 21:10:17 DD-WRT user.info : dnsmasq : dnsmasq daemon successfully stopped
May 21 21:10:17 DD-WRT user.info : dnsmasq : dnsmasq daemon successfully started

I need help, I've google everything in the last day but I can't figure why it doesn't work (and why there isn't the /etc/dnsmaq.conf).

jwoods
DD-WRT User

Joined: 13 Mar 2016
Posts: 403

Posted: Sun May 22, 2016 6:07 Post subject:
You might try the steps in this article... http://www.g-loaded.eu/2010/09/18/caching-nameserver-using-dnsmasq/

giuliomagnifico
DD-WRT User

Joined: 11 Apr 2016
Posts: 454
Location: Italy

Posted: Sun May 22, 2016 12:09 Post subject:

jwoods wrote:

You might try the steps in this article...

http://www.g-loaded.eu/2010/09/18/caching-nameserver-using-dnsmasq/

Thanks but the problem is that I don't have the /etc/dnsmasq.conf file...every tutorial is pretty useless because starts from the /etc/dnsmasq.conf file. And /etc is a not writable directory, I can't create it.

The dnsmasq daemon is running but it does nothing because it doesn't save/caching the ip/urls.

Alozaros
DD-WRT Guru

Joined: 16 Nov 2015
Posts: 6437
Location: UK, London, just across the river..

Posted: Sun May 22, 2016 13:18 Post subject:

well if you say there is no local DNS on, so how the adblocking works then ??
I do have local DNS on, as well i can state its working on my unit..and i do believe it caches in trough the time..
There are some occasions, that Local DNS breaks down, and i
have to restart the router but its very rare...
So try erase nvram, start from a scratch or try different build
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TP-Link WR740Nv1 ---DD-WRT 55630 WAP
TP-Link WR1043NDv2 -DD-WRT 55723 Gateway/DoT,Forced DNS,Ad-Block,Firewall,x4VLAN,VPN
TP-Link WR1043NDv2 -Gargoyle OS 1.15.x AP,DNS,QoS,Quotas
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Netgear XR500 --DD-WRT 55779 Gateway/DoH,Forced DNS,AP Isolation,4VLAN,Ad-Block,Firewall,Vanilla
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Netgear R7000 --DD-WRT 55460 Gateway/SmartDNS/DoH,AD-Block,Firewall,Forced DNS,x3VLAN,VPN
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