[Dnsmasq-discuss] randomly stops resolving and handling dhcp requests

[Simon Kelley]

simon-dnsmasq at uc.org wrote:
> Hi,
> 
> I'm having an intermittent issue where dnsmasq stops responding to
> DNS and DHCP requests and does not recover until I kill the process
> and restart. It can go for weeks without surfacing, and then happen
> repeatedly in the span of a few hours. I have a bridge, br0, which is
> between a wired and wireless network, no firewall rules on it.
> 
> Any ideas how I might track down the trigger, or more useful
> information I should be grabbing when it occurs?
> 
> Cheers, Simon P. Ditner
> 
> Config: ------
> 
> kernel 2.6.20-16-generic dnsmasq version 2.41

This may well be a known bug in 2.41: from the changelog:

             Fix subtle bug in cache code which could cause dnsmasq to
             lock spinning CPU in rare circumstances. Thanks to Alex
             Chekholko for bug reports and help debugging.

Best course of action is probably upgrade to 2.43 and see if that fixes 
things.

Cheers,

Simon.