[Dnsmasq-discuss] dnsmasq 2.61 no periodic RA's and sendto errors

Jim Bos jim876 at xs4all.nl
Sun May 13 17:29:44 BST 2012

On 05/12/2012 04:34 PM, Simon Kelley wrote:
> On 11/05/12 15:16, Vladislav Grishenko wrote:
>> Hi Simon,
>> dnsmasq 2.61 has couple of issues:
>> 1. No Router Advertisement and corresponding syslog sendto error when
>> replying on Router Solicitation from Windows XP and possible other OSes
>> It's caused by absence of source IPv6 address in RS packet, what is
>> allowed
>> by RFC if host's interface doesn't acquired valid link-local yet
>> In this case RA should be sent to all nodes multicast address (sources
>> has
>> ALL_HOSTS define, which has a bit different meaning)
>> 2. For non-slaac modes periodic RA doesn't work because next RA event
>> could
>> be reset by empty next slaac event
>> Actually it could work only for the first time, if additional random
>> delay
>> is 0.
>> Patches attached.
>> Best Regards, Vladislav Grishenko
> Many thanks. That solves the mystery of the sometime-missing periodic
> RAs. I was aware that could sometime happen, but hadn't reproduced the
> problem.
> I've put out 2.62test1 with these fixes in place. This probably needs
> another release, but I'll leave it a week or two in case any other
> regressions come to light in 2.61.
> Jim, I'm pretty sure this is the fix for you problem.
> Cheers,
> Simon.

I tried the patches already but unfortunately still don't get RA's. But
note I'm using SLAAC-only and the patch seem to be for non-slaac cases.
 I'll see if I can try an almost empty config file on another PC to
exclude any specific problem on my router.


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