COPYING and headers of source files says: Copyright (C) 1992-1996 Gnanasekaran Swaminathan <gs4t@virginia.edu> Permission is granted to use at your own risk and distribute this software in source and binary forms provided the above copyright notice and this paragraph are preserved on all copies. This software is provided "as is" with no express or implied warranty. Note that the right to make modifications is not granted, so this is non-free. A similar notice is in socket++.texi: Copyright (C) 1992,1993,1994 Gnanasekaran Swaminathan <gs4t@virginia.edu> Permission is granted to make and distribute verbatim copies of this document provided the copyright notice and this permission notice are preserved on all copies. Again, only verbatim copies allowed. IMHO, we can subsume all this under the "freedist" catch-all. In addition, some files carry a GPL-2 or later license notice. Since non-free and GPLed code are combined in one binary, redistribution is not allowed, so bindist restriction is needed.
Fixed.