[Olsr-dev] IP TTL value
Wed Jan 19 22:17:55 CET 2011
OK: if we patch, there must be a fall-back.
I opt for default TTL=1, and per interface configuration.
Op 19 jan 2011, om 22:01 heeft Markus Kittenberger het volgende geschreven:
> 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 OLSR
> > 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. 172.16.10.255).
> hmm, what about having an optional ttl configuration option?
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