This chapter describes the use and implementation of the FreeBSD TCP/IP networking stack.
Note: The file unsupported/start_network.c has example code of how to quickly start up your network. Then you may use the socket et al functions in the C library, as demonstrated in socket_bsd.c in the example directory. The file socket_com.c contains the same example but uses the COM interfaces without C library support.
Limitation/pecularity of the current implementation:
We have not yet implemented ``principals'' as described in the filesystem framework. All operations run with full privileges.oskit_socket_t instances created by the networking stack do not currently implement the following methods
: getsockopt, recvmsg/sendmsg
Also, the local loopback interface does not work because it is not properly set up. If you try to connect to 127.0.0.1 or to the local IP address, you'll see a division by zero trap in freebsd/src/sys/netinet/ip_output.c:302 because the if_mtu field is uninitialized. Required fix is to call the required "ifconfig" functions for the loopback interface.