Hi,<br /><br />i connected 2 laptops (LAN). Both computer have network interface eth0.<br />I installed also IBRDTN(IBR-DTN daemon 1.0.1 (build 294b543)) on both computers (via apt-get install in UBUNTU 14.04.2 LTS).<br /><br />I tested epidemic, flooding and prophet routing protocols<br /><br />root@vm1:/# dtnping dtn://vm2/echo<br />ECHO dtn://vm2/echo 64 bytes of data.<br />64 bytes from dtn://vm2/echo: seq=1 ttl=30 time=36.39 ms<br />64 bytes from dtn://vm2/echo: seq=2 ttl=30 time=39.86 ms<br />64 bytes from dtn://vm2/echo: seq=3 ttl=30 time=43.78 ms<br />64 bytes from dtn://vm2/echo: seq=4 ttl=30 time=34.04 ms<br />64 bytes from dtn://vm2/echo: seq=5 ttl=30 time=40.22 ms<br /><br />and they work fine.<br />Nevertheless, when i try to use UDP convergence layer by setting ibrdtnd.conf on both computers:<br /><br />net_interfaces = lan0<br /><br />net_lan0_type = udp<br />net_lan0_interface = eth0<br />net_lan0_port = 4556<br /><br />ping does not work(neither dtnsend)! Ibrdtn daemon does not show any errors(see below). In wireshark i can only see Discovery packets. Moreover i can see that both nodes can see each other (by using ibrdtn api neighbor list command).<br /> <br />Wed Dec 16 15:31:16 2015 INFO NativeDaemon: IBR-DTN daemon 1.0.1 (build<br />294b543)<br />Wed Dec 16 15:31:16 2015 INFO Configuration: Configuration:<br />/etc/ibrdtn/ibrdtnd.conf<br />Wed Dec 16 15:31:16 2015 INFO NativeDaemon: use logfile for output:<br />/var/log/ibrdtn/ibrdtn.log<br />Wed Dec 16 15:31:16 2015 INFO NativeDaemon: Parallel event processing<br />enabled using 4 processes.<br />Wed Dec 16 15:31:16 2015 INFO BundleCore: Local node name: dtn://vm1 Wed<br />Dec 16 15:31:16 2015 INFO BundleCore: Forwarding of bundles enabled. Wed<br />Dec 16 15:31:16 2015 INFO NativeDaemon: using bundle storage in<br />memory-only mode<br />Wed Dec 16 15:31:16 2015 INFO NativeDaemon: API initialized using tcp<br />socket: loopback:4550<br />Wed Dec 16 15:31:16 2015 INFO NativeDaemon: UDP ConvergenceLayer added on<br />eth0:4556<br />Wed Dec 16 15:31:16 2015 INFO DiscoveryAgent: listen to [224.0.0.142]:4551<br />Wed Dec 16 15:31:16 2015 INFO DiscoveryAgent: listen to [ff02::142]:4551<br />Wed Dec 16 15:31:16 2015 INFO DiscoveryAgent: add interface eth0<br />Wed Dec 16 15:31:16 2015 INFO NativeDaemon: Using flooding routing extensions<br />Wed Dec 16 15:31:16 2015 INFO FloodRoutingExtension: Initializing flooding<br />routing module<br /><br />ibrdtn log looks the same on the second computer (except of course local node name:)<br /><br />Ubuntu instalation were made just before testing IBRDTN (ports are open, IPTABLES do not block anything, time on each computer differs by only 2 seconds)<br /><br />I would be very grateful if you could provide me with any hints or maybe someone experienced this issue and already know the solution for this problem.<br /><br />Best Regards<br />Michał