I am trying to run and connect multiple nodes on a single machine, i.e different nodes using different ports. I am having trouble in connecting the nodes and making them talk to each other. While debugging, I inserted a LogPrintf("%s\n",addr) in the while loop of ThreadOpenConnections() in net.cpp file.

The output in the debug.log file is always [::]:0. What does this address mean ? Is it for localhost representation or something else ?


[::] is IPv6's version of localhost (


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