[OpenWrt-Devel] dnsmasq not leasing after a while. Sometimes more than 5 times a day

Denis Periša darkman.hr at gmail.com
Mon May 27 13:23:53 PDT 2019


There is no other dhcp in network, it's routed connection RB435G with
multiple cards wlan.
this is config example:

interface=eth0
except-interface=eth1
interface=wlan3
interface=wlan0
interface=wlan1
interface=wlan2

dhcp-range=172.17.3.20,172.17.3.253,255.255.255.0,1h
dhcp-range=172.17.4.20,172.17.4.253,255.255.255.0,1h
dhcp-range=172.17.5.20,172.17.5.253,255.255.255.0,1h
dhcp-range=172.17.6.20,172.17.6.253,255.255.255.0,1h
dhcp-range=172.17.7.20,172.17.7.253,255.255.255.0,1h

On Mon, May 27, 2019 at 9:03 PM Russell Senior <russell at personaltelco.net>
wrote:

> >>>>> "Denis" == Denis Periša <darkman.hr at gmail.com> writes:
>
> Denis> Yes, dnsmasq is still running but lease is not given.. I don't
> Denis> know how to debug it more.  Configuration is simple, one subnet
> Denis> range 192.168.0.10 to 192.168.0.200 on wlan0 interface for
> Denis> example. But it's not wifi issue, local also.  It sends mail as
> Denis> soon as error is detected and restarts dnsmasq after which it
> Denis> works. Device is not rebooting.  OpenWrt 18.06-SNAPSHOT,
> Denis> r7766-e9a7344550
>
> Denis> Also my scripts checkes two times just to rule out false
> Denis> negative.  Also, more public exposure or none is pretty much
> Denis> same.. I have device which gets maybe 1-2 person and one with 50
> Denis> .. behaving same. After a while it stops responding. Any more
> Denis> debug I could use somewhere?
>
> There may be another dhcp server detected on the network. See "force"
> option here:
>
>   https://openwrt.org/docs/guide-user/base-system/dhcp#dhcp_pools
>
> And/or post the contents of /var/etc/dnsmasq.conf.cfg*
>
>
> --
> Russell Senior, President
> russell at personaltelco.net
>
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