perfSONAR User Q&A and Other Discussion

[Gaetano Vocca <>]

Hi all,

is it possible to use two  bwctld endpoints both behind NAT?

I tried such configuration by opening the needed ports on the router but I get the following error:

Jan 31 17:27:47 raspib bwctld[2364]: FILE=endpoint.c, LINE=319, bind([host31-160-dynamic.27-79-r.retail.telecomitalia.it]:6189): Cannot assign requested address

Jan 31 17:27:47 raspib bwctld[2364]: FILE=protocol.c, LINE=2056, _BWLWriteStopSession called in wrong state.

Most probably this is due to the fact that the endpoint is trying to use the private address of the counterpart instead of the public one. 

Please note that I am able to have the test performed regularly if I try against a public server if I use the —flip option.

Thank you

Gaetano