Hi Stephan,

I have just tried again on a brand new installation and observed something strange, hopefully I have found a fix to the problem.
I tried to troubleshoot in stages, this is what I did:

1. Start dtnd with default conf file - Started OK with no convergence layer
2. Add custom conf file (below conf1), but do not specify the correct interface name, also do not start dtnd with -i option - Started OK with UDP Convergence layer (Datagram ConvergenceLayer (UDP) added on eth0:4556)
3. Add custom conf file (below conf2) with correct interface name and use -i option - Fails: (TCP ConvergenceLayer added on eno16777736:4556)
4. Revert back to step 2 - Started OK with UDP Convergence layer (Datagram ConvergenceLayer (UDP) added on eth0:4556)
5. Add custom conf file (below conf2) with correct interface name and _do_not_ use -i dtnd startup option - Works: (Datagram ConvergenceLayer (UDP) added on eno16777736:4556)

I think perhaps the net_eth_interface option in the conf file and the -i dtnd startup option may be conflicting with each other. It appears to start OK using only the net_eth_interface option in the conf file.
When I am logged on to my test bed in a few hours I will try some data transfers and report back.

Kind Regards,
Nik

Conf1:
local_uri = dtn://rx
net_eth_type = dgram:udp
#net_internet = eth0
net_eth_interface = eth0
net_eth_port = 4556
net_interfaces = eth

# Create a route to tx
static1_uri = dtn://tx
static1_port = 4556
static1_address = 10.0.0.1
static1_proto = dgram:udp
static1_immediately = yes # connect immediately to this node
#static1_global = no # this node is only reachable with internet access

Conf2:
local_uri = dtn://rx
net_eth_type = dgram:udp
#net_internet = eno16777736
net_eth_interface = eno16777736
net_eth_port = 4556
net_interfaces = eth

# Create a route to tx
static1_uri = dtn://tx
static1_port = 4556
static1_address = 10.0.0.1
static1_proto = dgram:udp
static1_immediately = yes # connect immediately to this node
#static1_global = no # this node is only reachable with internet access

routing = default
stats_traffic = yes
api_interface = lo

**dtnd startup line and output (UDP starts OK, but not bound to a working nic)

/home/alarm/downloads/ibr-dtn/install/sbin/dtnd -c /home/alarm/downloads/ibr-dtn/source/ibrdtn-repo/ibrdtn/daemon/etc/rx.conf

Mon Jan 18 15:33:05 2016 INFO NativeDaemon: IBR-DTN daemon 1.0.1 (build a5f9012)

Mon Jan 18 15:33:05 2016 INFO Configuration: Configuration: /home/alarm/downloads/ibr-dtn/source/ibrdtn-repo/ibrdtn/daemon/etc/rx.conf

Mon Jan 18 15:33:05 2016 INFO BundleCore: Local node name: dtn://rx

Mon Jan 18 15:33:05 2016 INFO BundleCore: Forwarding of bundles enabled.

Mon Jan 18 15:33:05 2016 INFO BundleCore: Non-singleton bundles are accepted.

Mon Jan 18 15:33:05 2016 INFO NativeDaemon: using bundle storage in memory-only mode

Mon Jan 18 15:33:05 2016 INFO NativeDaemon: API initialized using tcp socket: lo:4550

Mon Jan 18 15:33:05 2016 INFO NativeDaemon: Datagram ConvergenceLayer (UDP) added on eth0:4556

Mon Jan 18 15:33:05 2016 INFO DiscoveryAgent: listen to [ff02::142]:4551

Mon Jan 18 15:33:05 2016 INFO DiscoveryAgent: listen to [224.0.0.142]:4551

Mon Jan 18 15:33:05 2016 INFO DiscoveryAgent: add interface eth0

Mon Jan 18 15:33:05 2016 INFO NativeDaemon: Using default routing extensions


** dtnd startup line and output (Always uses TCP Convergence layer)

/home/alarm/downloads/ibr-dtn/install/sbin/dtnd -c /home/alarm/downloads/ibr-dtn/source/ibrdtn-repo/ibrdtn/daemon/etc/rx.conf -i eno16777736

Mon Jan 18 15:37:33 2016 INFO NativeDaemon: IBR-DTN daemon 1.0.1 (build a5f9012)

Mon Jan 18 15:37:33 2016 INFO Configuration: Configuration: /home/alarm/downloads/ibr-dtn/source/ibrdtn-repo/ibrdtn/daemon/etc/rx.conf

Mon Jan 18 15:37:33 2016 INFO BundleCore: Local node name: dtn://rx

Mon Jan 18 15:37:33 2016 INFO BundleCore: Forwarding of bundles enabled.

Mon Jan 18 15:37:33 2016 INFO BundleCore: Non-singleton bundles are accepted.

Mon Jan 18 15:37:33 2016 INFO NativeDaemon: using bundle storage in memory-only mode

Mon Jan 18 15:37:33 2016 INFO NativeDaemon: API initialized using tcp socket: lo:4550

Mon Jan 18 15:37:33 2016 INFO NativeDaemon: TCP ConvergenceLayer added on eno16777736:4556

Mon Jan 18 15:37:33 2016 INFO DiscoveryAgent: listen to [ff02::142]:4551

Mon Jan 18 15:37:33 2016 INFO DiscoveryAgent: listen to [224.0.0.142]:4551

Mon Jan 18 15:37:33 2016 INFO DiscoveryAgent: add interface eno16777736

Mon Jan 18 15:37:33 2016 INFO NativeDaemon: Using default routing extensions


Kind Regards,
Nik

On Mon, Jan 18, 2016 at 2:18 PM, Nik Ansell <nikansell00@gmail.com> wrote:
Hi Stephan,

Thank you for your kind reply.

I originally tried both net_eth_type = udp & static1_proto = udp, but this didn't work.
I will try them both as dgram:udp later and respond back.

Kind Regards,
Nik

On Mon, Jan 18, 2016 at 2:00 PM, Stephan Rottmann <rottmann@ibr.cs.tu-bs.de> wrote:
Hi Nik,

> static1_uri = dtn://rx
> static1_port = 4556
> static1_address = 10.0.1.3
> static1_proto = udp
Have you tried dgram:udp at this point?


Best regards,
Stephan