[Dnsmasq-discuss] dnsmasq sending truncated DHCPv6 packets

Simon Kelley simon at thekelleys.org.uk
Fri Dec 20 18:25:13 GMT 2019


On 19/12/2019 14:09, Derek Higgins wrote:
> On Tue, 3 Dec 2019 at 18:36, Simon Kelley <simon at thekelleys.org.uk> wrote:
>>
>>> The patch to fix this is trivial: change the save_counter() call to
>>>
>>> save_counter(-1)
>>>
>>> I just checked, and this mistake only occurs here, and has been there
>>> since forever.
>>>
>>> Good spot.
>>>
>>> Simon.
>>>
>>
>> Patch committed:
>>
>> http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=f73f7397d7e99f8412b7dc465061d20f642cdc85
> 
> Thanks for taking a look at this and sorry it's taken so long to get
> back to you,
> I've applied your patch to v2.76 and I'm afraid it doesn't appear to
> have solved the problem.
> 
> But I do have a little bit more info, I've noticed that this appears
> to be linked to router advertisements, every
> time I see a truncated packet it's always within milliseconds of a
> router advertisement. When I turn off router
> advertisements the truncated packets stop happening.
> 
> 

I think I see the problem. Does

http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=18a6bdd5414131699090d978b104e7f56ca0562a

help?


Simon.

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