[Olsr-dev] IP TTL value

Markus Kittenberger (spam-protected)
Wed Jan 19 22:01:34 CET 2011

On Wed, Jan 19, 2011 at 3:21 PM, Teco Boot <(spam-protected)> wrote:

> Op 19 jan 2011, om 14:56 heeft Henning Rogge het volgende geschreven:
> >> The IP TTL value of OLSR packets is 64, a OS default value.
> >> Mostly, this is OK. But IMHO it should be set to 1.
> >> OK to patch it?
> >> Need for a config parameter?
> > I don't see a reason for this, it just might make trouble with tunneling
> > links.
> TTL=1 should work on tunnels.

only if the tunneled packets do not inherit ttl from their payload,..

which as example is the default behaviour for ipip tunnels on 2.4 kernels,..

All IGPs I am aware of work on tunnels, or use some kind of multi-hop
> unicast signaling channel.
> >
> > OLSR packets are broadcast/multicast, so they are not forwarded anyways.
> Not true if one sets the address with strange value.
> Redirected broadcasts could have bad effects (e.g.

hmm, what about having an optional ttl configuration option?

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