[Olsr-users] how to reach HNA hosts?

Henning Rogge (spam-protected)
Mon Oct 19 11:11:47 CEST 2009

Am Sat October 17 2009 02:39:34 schrieb Cesar Santamaria:
> Hi all.  I've been trying to implement olsrd for our thesis, but we have
> been having problems trying to announce a host through HNA messages.
> This host is part of the NAT of one of the routers(we were using
> Freifunk implementation).  We added the private ip address as a HNA
> message and it was announced in the routing table, getting to it through
> the 'public' IP of the router.  BUT there is not a possible way to reach
> that host at all.
> We cannot reach a webserver in the HNA-announced host; we can't login
> through ssh; even if we add the host IP to the list of 'ping-reachable
> hosts' we cannot get to it. The documentation just says that if they are
> set as HNA messages(each one), the would be  reachable, but doesn't
> specify anything other than setting the IP in the olsrd.conf; seems not
> to work.
> We also tried to use the olsrd in dd-wrt, but was even more complex to
> manage so we just stayed with Freifunk.  But in both cases the HNA hosts
> couldn't be reached at all.
> What could be missing in the configuration?  The host is part of the
> routing table, but we haven't been able to connect to it.
Maybe there is no route back to the OLSR network ? Try to ping your webserver 
host and look with a tcpdump if the ICMP packages reach the server... and 
check if there is a routing entry (or a default route) to get back to the OLSR 

Henning Rogge
Diplom-Informatiker Henning Rogge , Fraunhofer-Institut für
Kommunikation, Informationsverarbeitung und Ergonomie FKIE
Kommunikationssysteme (KOM)
Neuenahrer Straße 20, 53343 Wachtberg, Germany
Telefon +49 228 9435-263,   Fax +49 228 9435 685
mailto:(spam-protected) http://www.fkie.fraunhofer.de
GPG: E1C6 0914 490B 3909 D944 F80D 4487 C67C 55EC CFE0

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