Re: [Dnsmasq-discuss] view running config
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Whenever the config is updated via DBus, the complete set of upstream servers is logged, I think. Cheers, Simon. On 22/06/15 14:34, CircleCode wrote: Hi, with dbus interface enabled, the config dnsmasq runs with is something like dynamic. is there a way to see its current dns config at some time during its execution? ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss -BEGIN PGP SIGNATURE- Version: GnuPG v1 iQIcBAEBCAAGBQJVmWV1AAoJEBXN2mrhkTWiZkQP/AvzndXNlZyS6PWbsUvvJMiy RrxP6cvuM0h/wLa9x7Fjs1BZV1xbjg4As721wkbUeLTKDszUzAWeqmN8FFRyAzN0 C+5bo3AmKZxEdqwygDzWovHYcBVhSmuanhY6FqBPwj5YBs7L+x3zsi2YKohmpVtN o5ZoRkL0CDGKYkp7hf/JTNu4Ys7H/7dbR9eDgs1QXAxx0tOuRbh4I+ovyCymLceD fcdStMuqBtoZsnb6F1UIfs/J3beAkAMbyB0cR4+83gbi+gXgaaBPPpmK1hyCSTb9 wCs42wbRTy2J0T7Wpr3WOBhzemZ30oEXK96hgobocS2C8XM1u/oeup/DDHhsf3YA y+F48L8mpTcBCUgHvMSuEvhwJx+dHjvlZ7dlYpP9a9433SaNMCCsAR6ZCobzVel7 IXl3hOSObT5/U19MpbyyJ+VDhMSVx9PqjQNdY1qYUWFgIraIe0DWPtbaSIKEmlTz TRxY0ZYQs9vR3n4rMlTJ+k8hCFHe9qIc93kFQglqpCpVahpnv+98gqPGn4BVfFgk o6TQ9sU0xvUzdf7DmCq+3Sovbna5twklI7P2M440Qp7PQ2C2fvtz569hEABO2mUG SjREJi1zMAuVc6QioZ6rn1M1nNWJZ58TvYBTFpwXKSy+bR1Uwy0v0Y5XBLh/uLCZ m84e38WwViUVuulHwDL0 =fjgI -END PGP SIGNATURE- ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] DNSMASQ log output format
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 If you have the latest release, 2.73 then - --log-queries=extra Will enchance the logging format in a way which makes it easier to link requests and replies. Cheers, Simon. On 28/06/15 12:54, ma...@manfbraun.de wrote: Hello ! I am just trying to understand how my VPN and my iptables work together. In this process, I missed, that dnsmasq shows me to whom a reply or config logentry would be send - there are too many concurrently. If dnsmasq would log the requestor address in each following line, this would be a big help. There is currently no chance to change the logformat. Just my notes. Thanks anyway and best regards, Manfred ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss -BEGIN PGP SIGNATURE- Version: GnuPG v1 iQIcBAEBCAAGBQJVmWawAAoJEBXN2mrhkTWiRUgP/jk8IO2ZjXYhBUhlrO/7MyZm F8nfFbQWatUkobzbmnkg6w5XdnoV5j9zwa9IIBfsQLlvv5PMBBDekTMHyyrjPeQc ZQ7x5S28/3Cp/EAgkiKFszynvImrNhrCKRoIi5bh9kxByfJOQEuFhbXs7RSD1tWP wYqTXj9mlKG6w0XZ63HkHUSoXZyiezHQZKqwj5wzqf8v7iLZY8yqwMM9zdYvAce5 T5rqdnt8mLKO/7wzL288Sk7V1GfcN7CTt+OJreNA6sR9aBPam21zAPEOKbb210iJ pFEqriAu9+5JkXX0uwB4Bg9z1qkYFDVuKowN8ys2Wqa8ONP8nbzk3jojSwZHDp2T bZN8z+dsPxIAOeNBw/ukZAAal8sgaa9+lQ7emb26D7DfEhSGnWe0JfYlolAJwMlF ETzi3i+50FBluHfEU0AgVzBt9tdxrMxk6tVc1Mo3BPOvJi9mNsSgoVoaLmlXDhN+ RR5aTSE6QmaqIrsvkNzfeTJja2sR06a0bsGi16GEmkucolHBEj1Eh3wrvs5BtmJg NFNmG6D529lU1soFI3DIMGu8aaMJJaqkvJGHT+E50sYYV5lwIU/Azk0wMrXUHLhi fhftwe57d7gFZcMSlGW/FrPYpGoEhWfWidLHD/MKUGJwCYO7hJd9f/SlbPKpYMjL rPpDlM5vTN9m5mKIvvQx =+xEY -END PGP SIGNATURE- ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] dnsmasq segfault
I have fixed the problem by including Requires=systemd-resolved.service After=systemd-resolved.service in the systemd service file for dnsmasq and it now boots correctly. On 5 July 2015 at 21:17, R bjorkeg...@gmail.com wrote: dnsmasq segfaults at boot and systemd fails to load the service. ( http://sysv.se/journal.txt ) after the boot process systemd can start dnsmasq successfully through 'systemctl start dnsmasq' and everything works. This started happening after I switched from using netctl + dhcpcd to configure my interfaces to using systemd-networkd + systemd-resolved. I was able to reproduce the segfault after the system had started by stopping systemd-resolved. When systemd-resolved was stopped, 'systemctl start dnsmasq' again segfaulted. Starting systemd-resolved again, systemctl start dnsmasq worked without problems. I'm using dnsmasq - dnscrypt_proxy - opendns on latest Arch Linux fully updated as of the date of this message. ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
[Dnsmasq-discuss] dnsmasq segfault
dnsmasq segfaults at boot and systemd fails to load the service. ( http://sysv.se/journal.txt ) after the boot process systemd can start dnsmasq successfully through 'systemctl start dnsmasq' and everything works. This started happening after I switched from using netctl + dhcpcd to configure my interfaces to using systemd-networkd + systemd-resolved. I was able to reproduce the segfault after the system had started by stopping systemd-resolved. When systemd-resolved was stopped, 'systemctl start dnsmasq' again segfaulted. Starting systemd-resolved again, systemctl start dnsmasq worked without problems. I'm using dnsmasq - dnscrypt_proxy - opendns on latest Arch Linux fully updated as of the date of this message. ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] openvpn + dnsmasq
Is this a bad question? Am 21.06.2015 um 21:13 schrieb Anton Blau: Hello, please excuse my bad englisch. I am not a native speaker. I run dnsmasq with openvpn on my Debian Router. After the upgrade to jessie dnsmasq crashes on the boot because the openvpn device isn´t up. openvpn starts as /etc/rc5.d/S02openvpn and dnsmasq starts as /etc/rc5.d/S03dnsmasq In /var/log/syslog I got this error-message: Jun 21 07:46:09 router dnsmasq[999]: dnsmasq: Konnte Empfangs-Socket für 192.168.10.1: Die angeforderte Adresse kann nicht zugewiesen werden nicht erzeugen Jun 21 07:46:09 router dnsmasq[999]: Konnte Empfangs-Socket für 192.168.10.1: Die angeforderte Adresse kann nicht zugewiesen werden nicht erzeugen Jun 21 07:46:09 router dnsmasq[999]: Start fehlgeschlagen Jun 21 07:46:09 router systemd[1]: dnsmasq.service: control process exited, code=exited status=2 Jun 21 07:46:09 router systemd[1]: Failed to start dnsmasq - A lightweight DHCP and caching DNS server. Jun 21 07:46:09 router systemd[1]: Dependency failed for Host and Network Name Lookups. Jun 21 07:46:09 router systemd[1]: Unit dnsmasq.service entered failed state. How is it possible to check openvpn bevor starting dnsmasq? Thank you! Tony ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] Hang when system time is changed backwards
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Hash: SHA256
Using monotonic time seems to be a bit of a portability nightmare, as
an alternative, I've added code to count the number of zero returns
from select(). The standard wait is three seconds, so once select()
has returned zero 12 times, the loop ends even if the result of
gettimeofday() doesn't end it. Unless the net is unfeasibly busy
(ending every select call with a received packet) then that should
put a sensible limit of the waiting time.
Code in the git repo now, if you could test it.
Cheers,
Simon.
On 29/06/15 14:00, Jacob Siverskog wrote:
Hi! It seems like dnsmasq may occasionally hang (=become
unresponsive, unkillable with killall dnsmasq (-9 works), doesn't
seem to answer on DHCP requests etc) if the system time is changed
backwards.
I ran strace on dnsmasq once when this happened: root@OD-11:~#
strace -p 1645 -f -tt -s 1024 Process 1645 attached 12:12:08.502148
select(18, [6 7 8 9 10 11 15 16 17], [], NULL, {0, 46327}) = 0
(Timeout) 12:12:08.552953 gettimeofday({1435572728, 553933}, NULL)
= 0 12:12:08.555642 select(18, [6 7 8 9 10 11 15 16 17], [], NULL,
{0, 25}) = 0 (Timeout) 12:12:08.808748
gettimeofday({1435572728, 809379}, NULL) = 0 12:12:08.810668
select(18, [6 7 8 9 10 11 15 16 17], [], NULL, {0, 25}) = 0
(Timeout) 12:12:09.063807 gettimeofday({1435572729, 65256}, NULL) =
0 12:12:09.066343 select(18, [6 7 8 9 10 11 15 16 17], [], NULL,
{0, 25}) = 0 (Timeout) 12:12:09.319034
gettimeofday({1435572729, 320590}, NULL) = 0 12:12:09.321021
select(18, [6 7 8 9 10 11 15 16 17], [], NULL, {0, 25}) = 0
(Timeout)
I grep:ed for select:s in the source code and my guess is that it's
the icmp_ping() select loop in dnsmasq.c that gets confused.
Perhaps monotonic time should be used in this for loop: for (now =
start = dnsmasq_time(); difftime(now, start) (float)PING_WAIT;)
I manually set the time forward a few hours and dnsmasq released
immediately: root@SYSTEM:~# date -s 2015-06-29 14:14:56 Mon Jun
29 14:14:56 CEST 2015 root@SYSTEM:~# Mon Jun 29 14:14:56 2015
daemon.info dnsmasq-dhcp[1645]: DHCPDISCOVER(wlan0-work)
8a:33:14:0f:3b:d8 Mon Jun 29 14:14:56 2015 daemon.info
dnsmasq-dhcp[1645]: DHCPOFFER(wlan0-work) 192.168.7.146
8a:33:14:0f:3b:d8
I'm using dnsmasq 2.72.
Thanks, Jacob
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Re: [Dnsmasq-discuss] openvpn + dnsmasq
Hi Anton, it might have helped if the error messages weren't in German... ;-) Debian Jessie is using systemd as init system. systemd does not always start legacy services (those described in /etc/init.d rather than /etc/init) in the order you would expect (for more details, see https://utcc.utoronto.ca/~cks/space/blog/linux/SystemdAndSysVInitScripts). So it is possible that in your setup systemd starts openvpn and dnsmasq in parallel or in the wrong order rather than in alphabetical sequence. To fix this, you could either: a) convert the SYSV init scripts to systemd init scripts. b) add LSB standard comment blocks to the existing SYSV init scripts to declare the dependency between opendns and dnsmasq. Hope this helps Johannes On Sun, 5 Jul 2015, Anton Blau wrote: Is this a bad question? Am 21.06.2015 um 21:13 schrieb Anton Blau: Hello, please excuse my bad englisch. I am not a native speaker. I run dnsmasq with openvpn on my Debian Router. After the upgrade to jessie dnsmasq crashes on the boot because the openvpn device isn´t up. openvpn starts as /etc/rc5.d/S02openvpn and dnsmasq starts as /etc/rc5.d/S03dnsmasq In /var/log/syslog I got this error-message: Jun 21 07:46:09 router dnsmasq[999]: dnsmasq: Konnte Empfangs-Socket für 192.168.10.1: Die angeforderte Adresse kann nicht zugewiesen werden nicht erzeugen Jun 21 07:46:09 router dnsmasq[999]: Konnte Empfangs-Socket für 192.168.10.1: Die angeforderte Adresse kann nicht zugewiesen werden nicht erzeugen Jun 21 07:46:09 router dnsmasq[999]: Start fehlgeschlagen Jun 21 07:46:09 router systemd[1]: dnsmasq.service: control process exited, code=exited status=2 Jun 21 07:46:09 router systemd[1]: Failed to start dnsmasq - A lightweight DHCP and caching DNS server. Jun 21 07:46:09 router systemd[1]: Dependency failed for Host and Network Name Lookups. Jun 21 07:46:09 router systemd[1]: Unit dnsmasq.service entered failed state. How is it possible to check openvpn bevor starting dnsmasq? Thank you! Tony ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss --- Mit zwei Euro im Monat helfen: http://www.2-euro-helfen.de/ Help to fight hunger and injustice in our world: http://www.devp.org/ http://www.oxfam.org/___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
