[Olsr-dev] [Olsr-users] olsrd 0.6.6.1 (and earlier) ipv6 problems

[Ferry Huberts]

Henning talks about fragmentation in olsrd itself.
There seems to be a bug in there, Russell and he discovered

On 29/03/14 15:46, Teco Boot wrote:
> Sure.
>
> What is your goal, having IP fragmentation work well and support for up to 64KB packets and/or fragmentation in OLSR, where messages are split off at say 1KB?
> First one should work easily, just turn off df=1.
> Maybe OpenVPN tunnel MTU is not set correctly and as a result second one fails.
>
> Teco
>
>
> Op 29 mrt. 2014, om 15:20 heeft Henning Rogge <(spam-protected)> het volgende geschreven:
>
>> Still we should look into the problem with the fragmentation anyways.
>>
>> Henning
>>
>> On Sat, Mar 29, 2014 at 3:18 PM, Teco Boot <(spam-protected)> wrote:
>>> What I have *is* dynamic.
>>>
>>> What is missing in OpenVPN: float. With float, the tunnel doesn't depend on
>>> smartgateway or whatever, the tunnel would survive changing attachment
>>> points. Float  is in 2.4 (I hope).
>>>
>>> Teco
>>>
>>>
>>> Op 29 mrt. 2014, om 07:33 heeft Russell Senior <(spam-protected)>
>>> het volgende geschreven:
>>>
>>> We could switch to a static routing regime, but olsr is (has been) nice for
>>> handling it all dynamically for us.
>>>
>>> Is this limitation in olsr we have encountered correctable in the near term,
>>> or should we be looking at converting to static routes?
>>>
>>> Thanks!
>>>
>>>
>>> On Fri, Mar 28, 2014 at 9:58 AM, Teco Boot <(spam-protected)> wrote:
>>>>
>>>> Running a MANET protocol over a VPN hub&spoke infrastructure is not
>>>> something I recommend. On hub, all TC messages are pushed on all tunnels.
>>>> Can introduce problems when packet rate isn't shaped.
>>>>
>>>> What we have is a VPN tunnel for each OLSR router. On spokes, RFC1918
>>>> routes go into the tunnel. Hub has /24 routes back, generated from
>>>> certificate. Scales very well.
>>>>
>>>> Teco
>>>>
>>>> Op 28 mrt. 2014, om 14:54 heeft Ferry Huberts <(spam-protected)> het
>>>> volgende geschreven:
>>>>
>>>>>
>>>>>
>>>>> On 28/03/14 10:34, Henning Rogge wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I must admit that I am not convinced that its an Olsrd bug what we are
>>>>>> seeing...
>>>>>>
>>>>>> If I see it correctly Olsrd is running over the VPN interface
>>>>>> connection (interface name "vpn"), right?
>>>>>>
>>>>>> Is the VPN connection between the nodes still active during the route
>>>>>> loss? Most of the nodes seem to have direct connections and the "30
>>>>>> seconds until recovery" sounds like an ETX value slowly going down and
>>>>>> then dropping the link.
>>>>>
>>>>> 30 seconds is also something we see when our vpn connections break...
>>>>>
>>>>> --
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>>>>> https://lists.olsr.org/mailman/listinfo/olsr-users
>>>>
>>>
>>>
>>>
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>
>

-- 
Ferry Huberts