=============================================================================== $Id: BUGS,v 1.1.1.1 2012/02/21 22:14:23 misho Exp $ LIBNET 1.1 (c) 1998 - 2004 Mike D. Schiffman http://www.packetfactory.net/libnet =============================================================================== 1.1.0 KNOWN BUG LIST - It appears as though getprotobynumber() is broken in some linux distributions. The /etc/protocols file should be of the format: protocol name protocol number proctocol symbolic constant comment Most of the file (in my redhat 7.1) distro complies with this format until you get to the end of the file: # 134-254 # Unassigned # 255 # Reserved This will cause getprotobynumber() and presumably getprotobyname() to segfault. If you get this behavior in your program and you're calling __libnet_file_dump(), this could be the reason. Caveat Emptor.