[Dnsmasq-discuss] dnsmasq exists with sigterm following bootp messages

Thomas Ballantyne tballantyne at netflix.com
Mon Dec 7 18:41:36 GMT 2015


Hi,

Any feedback here?

Thanks,
Thomas


On Tue, Dec 1, 2015 at 12:16 PM, Thomas Ballantyne <tballantyne at netflix.com>
wrote:

> Hi Simon,
>
> Seeing an issue where BOOTP messages are crashing dnsmasq. dnsmasq exits
> with a SIGTERM.
>
> I tried adding
>
> dhcp-ignore=bootp
>
>
> to dnsmasq.more.conf but that did not solve the problem.
>
> I've tested on Ubuntu 14.0.4, with dnsmasq 2.75.
>
>
> We run dnsmasq within a virtual machine image of Ubuntu 14. We connect
> devices under test (set top boxes, smart TVs, consoles, etc.) to the VM via
> a USB dongle. The device under test attempts to lease an IP address from
> dnsmasq on the host machine (192.168.144.xx) and then connect to the
> Netfllix cloud (10.10.xx.xx.) Our Network Agent software running on the
> host acts like a simple two port router, reconfigures the device under
> test, and does additional dns overrides to allow connections to our test
> and production infrastructure.
>
> We see this issue specifically when connecting a partner Smart TV to the
> host running dnsmasq via USB dongle.  The partner TV runs Linux/Android
> OS.  Other devices under the same configuration do not show this behavior.
> We've reported the issue to the partner as well. They indicate they do not
> see the issue when bypassing dnsmasq. Problem happens anywhere from 30-50%
> of hard reboots. The end result is the TV fails to lease an IP address.
> I've also seen the USB dongle issue BOOTP messages causing dnsmasq to exit
> with sigterm.
>
> 'service restart dnsmasq' works to bring dnsmasq back after the failure.
>
> I've attached a portion of the dnsmasq logs (30 lines before sigterm.)
>
> Anything we can do here? Let me know if I can provide more detail.
>
> Thanks,
> Thomas
>
>
> Thomas Ballantyne
> Operations Engineer, Netflix
>
>
>
>
>
>
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