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

Joerg Pommnitz (spam-protected)
Wed Sep 10 11:08:31 CEST 2008

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.

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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