I have read Jonathan Naylor's XFBB doc and a few other tidbits. In search for understanding, there is very little in the archives that talks about why a loopback is needed nor their functions. Would some kind sole take a moment to spell this functionality out? I am trying to understand the application of the loopback and its roll with ax25-utils <--> jnos/tnos/xfbb. I am sure a few other "laymen" would like to read it as well. 73, John
