Hello everyone, I''m new at the softflow and it''s just what I need this moment. I''m attempting install it but unsuccessful! When I run ./configure show me the error below checking size of char... configure: error: cannot compute sizeof (char) follow some erros in the config.log after run ./configure conftest.c:8:28: error: ac_nonexistent.h: No such file or directory conftest.c:51:21: error: net/bpf.h: No such file or directory conftest.c:18:21: error: net/bpf.h: No such file or directory conftest.c:27: error: ''struct sockaddr'' has no member named ''sa_le so...I can''t run the "make" ... what is missing on the my michine ?? System Operation is CentOS 5.7 any tip is welcome. thanks!