[Olsr-users] Patch: Set IPv6 hop limit to 1

Joerg Pommnitz (spam-protected)
Wed Sep 10 11:40:51 CEST 2008


The TTL is not the TTL in the OLSR message but the one in the IP
header. OLSR messages that need forwarding through the whole net
get forwarded by olsrd.

-- 
Regards
       Joerg


--- Hannes Gredler <(spam-protected)> schrieb am Mi, 10.9.2008:

> Von: Hannes Gredler <(spam-protected)>
> Betreff: Re: [Olsr-users] Patch: Set IPv6 hop limit to 1
> An: "Joerg Pommnitz" <(spam-protected)>
> CC: "OLSR discussion and development" <(spam-protected)>
> Datum: Mittwoch, 10. September 2008, 11:31
> On Wed, Sep 10, 2008 at 02:08:31AM -0700, Joerg Pommnitz
> wrote:
> | Hello all,
> | here is a patch that sets the hop limit (aka ttl) for
> outgoing
> | packets to 1. Currently olsrd only works with global
> multicast
> | addresses. If your olsr box routes multicast traffic it
> will happily
> | (and correctly) forward the OLSR messages, which is not
> what we want.
> 
> i am not sure i understand.
> may i ask how TC/MID and HNA message should reach nodes
> across your 1-hop neighborhood ?
> 
> /hannes
>  
> | IMHO the really correct solution would be to use a link
> local
> | multicast address, but these use link local source
> addresses as well
> | which unfortunately confuses olsrd. 
> | 
> | The patch is against olsrd-0.5.3 but should be easily
> adaptable to
> | the current trunk.

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